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1-48 of 74 results for "aquarium PH & Alkalinity additive"

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Brightwell Aquatics pH+, pH Increaser for All Marine and Freshwater Aquariums - 125 ml

Brightwell Aquatics pH+, pH Increaser for All Marine and Freshwater Aquariums - 125 ml

4.3 out of 5 stars
128
$7.06$7.06
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Tetra Correct pH Tablets 8 Count, For aquarium Water

Tetra Correct pH Tablets 8 Count, For aquarium Water

4.5 out of 5 stars
3,189
1K+ bought in past month
$2.92$2.92
List: $4.19$4.19
Get a $30 promotional credit when you spend at least $100.00 in promotional item(s)
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Brightwell Aquatics Alkalin8.3 - Concentrated KH Buffer Supplement for All Marine and Reef Aquariums

Brightwell Aquatics Alkalin8.3 - Concentrated KH Buffer Supplement for All Marine and Reef Aquariums

4.7 out of 5 stars
127
$31.81$31.81
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FREE delivery Thu, May 9 on $35 of items shipped by Amazon
Or fastest delivery Tue, May 7
More Buying Choices
$27.22(3 new offers)
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Fluval Sea Alkalinity for Aquarium, 8-Ounce

Fluval Sea Alkalinity for Aquarium, 8-Ounce

4.4 out of 5 stars
114
50+ bought in past month
$3.79$3.79
List: $7.99$7.99
$3.60 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Alkaline Buffer, 300 g / 10.5 oz

Alkaline Buffer, 300 g / 10.5 oz

4.7 out of 5 stars
1,179
400+ bought in past month
$11.66$11.66
List: $13.58$13.58
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Brightwell Aquatics Reef Code A - Balanced Calcium and Alkalinity System for Marine Fish & Reef Aquariums 250-ml

Brightwell Aquatics Reef Code A - Balanced Calcium and Alkalinity System for Marine Fish & Reef Aquariums 250-ml

4.6 out of 5 stars
234
$11.25$11.25
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Only 4 left in stock (more on the way).
Brightwell Aquatics Alkalin8.3-P - Alkaline KH Buffer Powder for All Marine and Reef Aquariums

Brightwell Aquatics Alkalin8.3-P - Alkaline KH Buffer Powder for All Marine and Reef Aquariums

4.5 out of 5 stars
75
$20.69$20.69
Typical: $24.42$24.42
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$14.20(5 new offers)
API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer 8.8-Ounce Container

API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer 8.8-Ounce Container

4.5 out of 5 stars
2,386
800+ bought in past month
$9.89$9.89
List: $15.78$15.78
$9.40 with Subscribe & Save discount
Get a $30 promotional credit when you spend at least $100.00 in promotional item(s)
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem Reef Carbonate 500ml

Seachem Reef Carbonate 500ml

4.7 out of 5 stars
344
100+ bought in past month
$6.87$6.87
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem Alkaline Regulator 250gram

Seachem Alkaline Regulator 250gram

4.4 out of 5 stars
101
50+ bought in past month
$13.19$13.19
$12.53 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Reef Carbonate, 2 L / 67.6 fl. oz.

Reef Carbonate, 2 L / 67.6 fl. oz.

4.6 out of 5 stars
67
$25.15$25.15
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
API pH UP Freshwater Aquarium Water pH Raising Solution for fish,4-Ounce Bottle, Brown

API pH UP Freshwater Aquarium Water pH Raising Solution for fish,4-Ounce Bottle, Brown

4.5 out of 5 stars
2,363
700+ bought in past month
$6.29$6.29
List: $9.88$9.88
$5.98 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
KORDON #35316 pH Increase Adjuster for Aquarium, 16-Ounce

KORDON #35316 pH Increase Adjuster for Aquarium, 16-Ounce

4.5 out of 5 stars
393
300+ bought in past month
$6.71$6.71
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem Acid Buffer 300gram

Seachem Acid Buffer 300gram

4.7 out of 5 stars
692
200+ bought in past month
$13.34$13.34
List: $15.86$15.86
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$12.34(14 new offers)
Seachem Reef Buffer 250gram

Seachem Reef Buffer 250gram

4.7 out of 5 stars
555
100+ bought in past month
$7.12$7.12
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
KORDON #35326 pH Decrease Adjuster for Aquarium, 16-Ounce

KORDON #35326 pH Decrease Adjuster for Aquarium, 16-Ounce

4.2 out of 5 stars
251
200+ bought in past month
$6.93$6.93
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
API pH DOWN Freshwater Aquarium Water pH Reducing Solution 4-Ounce Bottle

API pH DOWN Freshwater Aquarium Water pH Reducing Solution 4-Ounce Bottle

4.6 out of 5 stars
752
200+ bought in past month
$10.69$10.69
FREE delivery Wed, May 8 on $35 of items shipped by Amazon
More Buying Choices
$5.88(8 new offers)
API PROPER pH 8.2 Freshwater Aquarium Water pH Stabilizer 7.4-Ounce Container

API PROPER pH 8.2 Freshwater Aquarium Water pH Stabilizer 7.4-Ounce Container

4.5 out of 5 stars
678
100+ bought in past month
$9.89$9.89
Typical: $10.98$10.98
$9.40 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem Alkaline Buffer 600gram

Seachem Alkaline Buffer 600gram

4.7 out of 5 stars
515
50+ bought in past month
$17.54$17.54
$16.66 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$17.53(13 new offers)
API PROPER pH 6.5 Freshwater Aquarium Water pH Stabilizer 8.5-Ounce Container

API PROPER pH 6.5 Freshwater Aquarium Water pH Stabilizer 8.5-Ounce Container

4.4 out of 5 stars
235
50+ bought in past month
$9.89$9.89
List: $15.78$15.78
$9.40 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Imagitarium pH Reducer, 4oz

Imagitarium pH Reducer, 4oz

4.4 out of 5 stars
13
$7.99$7.99 ($7.99$7.99/Count)
FREE delivery May 8 - 14
Or fastest delivery May 6 - 8
Only 20 left in stock - order soon.
Tetra EasyBalance Plus 3.38 Ounces, Weekly Freshwater Aquarium Water Conditioner (836135)

Tetra EasyBalance Plus 3.38 Ounces, Weekly Freshwater Aquarium Water Conditioner (836135)

4.6 out of 5 stars
1,492
100+ bought in past month
$6.00$6.00
List: $7.04$7.04
$5.70 with Subscribe & Save discount
Get a $30 promotional credit when you spend at least $100.00 in promotional item(s)
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
KORDON #35314 pH Increase Adjuster for Aquarium, 4-Ounce

KORDON #35314 pH Increase Adjuster for Aquarium, 4-Ounce

4.2 out of 5 stars
9
$6.10$6.10
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Fritz Aquatics 80285 Fritz pH Neutralizer for Fresh and Salt Water Aquariums, 1-LBS

Fritz Aquatics 80285 Fritz pH Neutralizer for Fresh and Salt Water Aquariums, 1-LBS

4.4 out of 5 stars
126
$24.99$24.99
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Only 2 left in stock - order soon.
Brightwell Aquatics Florin pH- - Water Conditioner to Lower pH Level in Freshwater, Planted, and Marine Saltwater Aquarium...

Brightwell Aquatics Florin pH- - Water Conditioner to Lower pH Level in Freshwater, Planted, and Marine Saltwater Aquariums, 500-ml

3.5 out of 5 stars
6
$15.51$15.51
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FREE delivery Wed, May 8 on $35 of items shipped by Amazon
Or fastest delivery Tue, May 7
Only 5 left in stock (more on the way).
Continuum Aquatics Basis Borate Free KH Buffer - Professional Alkalinity Boosting pH and KH Control for Marine Fish and Re...

Continuum Aquatics Basis Borate Free KH Buffer - Professional Alkalinity Boosting pH and KH Control for Marine Fish and Reef Saltwater Aquariums

5.0 out of 5 stars
1
$10.14$10.14
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FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Only 8 left in stock (more on the way).
Fritz Aquatics 81103 Fritz pH Lower for Fresh and Salt Water Aquariums, 16-Ounce

Fritz Aquatics 81103 Fritz pH Lower for Fresh and Salt Water Aquariums, 16-Ounce

4.4 out of 5 stars
506
$21.07$21.07
FREE delivery May 14 - 16
Or fastest delivery May 13 - 15
Only 2 left in stock - order soon.
More Buying Choices
$18.79(2 new offers)
Continuum Aquatics Flora Viv KH+ - Alkalinity Booster & pH Stabilizer for Freshwater Aquariums, 1000 Grams / 1Kg

Continuum Aquatics Flora Viv KH+ - Alkalinity Booster & pH Stabilizer for Freshwater Aquariums, 1000 Grams / 1Kg

4.2 out of 5 stars
79
$20.26$20.26
Typical: $23.07$23.07
Save more with Subscribe & Save
FREE delivery Thu, May 9 on $35 of items shipped by Amazon
Or fastest delivery Tue, May 7
Seachem Neutral Regulator 250gram

Seachem Neutral Regulator 250gram

4.6 out of 5 stars
2,043
600+ bought in past month
$7.24$7.24
List: $11.48$11.48
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit (29A)

API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit (29A)

4.6 out of 5 stars
785
200+ bought in past month
$11.69$11.69 ($11.69$11.69/Count)
List: $18.28$18.28
Save more with Subscribe & Save
FREE delivery Wed, May 8 on $35 of items shipped by Amazon
Imagitarium pH Enhancer, 4oz

Imagitarium pH Enhancer, 4oz

4.7 out of 5 stars
7
$7.99$7.99 ($7.99$7.99/Count)
FREE delivery May 7 - 8
Fritz Aquatics 81104 Fritz pH Higher for Fresh and Salt Water Aquariums, 16-Ounce

Fritz Aquatics 81104 Fritz pH Higher for Fresh and Salt Water Aquariums, 16-Ounce

4.1 out of 5 stars
154
$16.44$16.44
FREE delivery on $35 shipped by Amazon.
Tetra Correct pH Tablets - 24 Tablets Total (3 Packs with 8 Tablets per Pack)

Tetra Correct pH Tablets - 24 Tablets Total (3 Packs with 8 Tablets per Pack)

4.6 out of 5 stars
307
50+ bought in past month
$12.97$12.97
List: $17.99$17.99
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Reef Carbonate, 4 L / 1 fl. gal.

Reef Carbonate, 4 L / 1 fl. gal.

4.8 out of 5 stars
3
$38.04$38.04
FREE delivery Tue, May 7
Only 17 left in stock (more on the way).
Seachem Ph Alert for Freshwater

Seachem Ph Alert for Freshwater

3.9 out of 5 stars
169
$9.62$9.62
Typical: $10.99$10.99
$9.14 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$8.10(17 new offers)
Fritz Aquatics 80301 Fritz RPM Alkalinity Buffer Reef Aquarium Supplement PT 1, 32-Ounce

Fritz Aquatics 80301 Fritz RPM Alkalinity Buffer Reef Aquarium Supplement PT 1, 32-Ounce

4.5 out of 5 stars
69
$22.56$22.56
FREE delivery May 7 - 9
Or fastest delivery May 6 - 8
Only 4 left in stock - order soon.
More Buying Choices
$22.55(4 new offers)
API Proper pH 7.5 Freshwater Aquarium Water pH Stabilizer 9.2-Ounce Container, Proper PH 7.5 PWDR JAR-Small, Whites & Tan...

API Proper pH 7.5 Freshwater Aquarium Water pH Stabilizer 9.2-Ounce Container, Proper PH 7.5 PWDR JAR-Small, Whites & Tans, 260 Grams

4.3 out of 5 stars
581
200+ bought in past month
$16.96$16.96
$16.11 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$15.31(6 new offers)
Fritz Alkalinity (KH) Test Kit | Measures dKH in Fersh & Salt Water Aquarium Fish Tanks

Fritz Alkalinity (KH) Test Kit | Measures dKH in Fersh & Salt Water Aquarium Fish Tanks

$16.45$16.45 ($16.45$16.45/Count)
FREE delivery May 7 - 9
Or fastest delivery May 6 - 8
More Buying Choices
$15.99(4 new offers)
ESV Aquatics Bionic Part 1 Treatment, Alkalinity

Bionic Part 1 Treatment, Alkalinity

4.0 out of 5 stars
39
$25.59$25.59
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$25.58(3 new offers)
Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 5...

Brightwell Aquatics Florin Delta KH+ - Increases Carbonate Hardness and pH Stability in Freshwater and Planted Aquariums 500-g

4.1 out of 5 stars
17
$18.30$18.30
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem MultiTest - Marine pH/Alkalinity - 75 Tests

Seachem MultiTest - Marine pH/Alkalinity - 75 Tests

3.7 out of 5 stars
23
$17.11$17.11
Typical: $18.25$18.25
FREE delivery Wed, May 8 on $35 of items shipped by Amazon
Only 15 left in stock (more on the way).
More Buying Choices
$15.99(10 new offers)
Brightwell Aquatics Alkalin8.3 - Liquid pH Buffer & Alkalinity (KH) - Builder 250mL / 8.5oz

Brightwell Aquatics Alkalin8.3 - Liquid pH Buffer & Alkalinity (KH) - Builder 250mL / 8.5oz

5.0 out of 5 stars
3
$14.65$14.65
FREE delivery May 7 - 9
More Buying Choices
$11.99(5 new offers)
API PH TEST KIT 250-Test Freshwater Aquarium Water pH Test Kit, 4 Piece Set

API PH TEST KIT 250-Test Freshwater Aquarium Water pH Test Kit, 4 Piece Set

4.6 out of 5 stars
3,192
400+ bought in past month
$7.19$7.19 ($7.19$7.19/Count)
List: $11.28$11.28
$6.83 with Subscribe & Save discount
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
More Buying Choices
$7.18(14 new offers)
Fluval 3 Ions Fluval Sea Trace for Aquarium, 8-Ounce

Fluval 3 Ions Fluval Sea Trace for Aquarium, 8-Ounce

4.6 out of 5 stars
68
$8.27$8.27
List: $11.99$11.99
Get a $30 promotional credit when you spend at least $100.00 in promotional item(s)
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
API Perfect Start Complete Aquarium Start Up Program Additive, 1 Count (Pack of 1)

API Perfect Start Complete Aquarium Start Up Program Additive, 1 Count (Pack of 1)

4.4 out of 5 stars
150
50+ bought in past month
$14.76$14.76
Typical: $19.36$19.36
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Only 11 left in stock - order soon.
Tetra AquaSafe Plus 16.9 Ounces, aquarium Water Conditioner And Dechlorinator (16213)

Tetra AquaSafe Plus 16.9 Ounces, aquarium Water Conditioner And Dechlorinator (16213)

4.8 out of 5 stars
13,203
1K+ bought in past month
$10.49$10.49
List: $11.49$11.49
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
Seachem Liquid Neutral Regulator 500 ml, 16.9 fluid ounce.

Seachem Liquid Neutral Regulator 500 ml, 16.9 fluid ounce.

4.5 out of 5 stars
136
100+ bought in past month
$11.17$11.17
Save more with Subscribe & Save
FREE delivery Tue, May 7 on $35 of items shipped by Amazon
API Proper pH 7.0 Freshwater Aquarium Water pH Stabilizer and API Ammo-Lock Freshwater and Saltwater Aquarium Ammonia Deto...

API Proper pH 7.0 Freshwater Aquarium Water pH Stabilizer and API Ammo-Lock Freshwater and Saltwater Aquarium Ammonia Detoxifier

$21.13$21.13
List: $33.26$33.26
FREE delivery on $35 shipped by Amazon.
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