How long after using do you re- test to see how much the pH went up?

We would recommend waiting about a half-hour in order for the water to fully circulate so that you get an accurate reading. If you have a very large system or very little flow, you may want to wait 1-2 hours. You are safe to re-dose at that point as long as you have not changed more than 0.2 in pH, which is the maximum we recommend changing within a 24 hour period to reduce fish stress. If you have any other questions, feel free to reach out to us at 1-800-847-0659 or APITechServices@effem.com

Can this be used in a tank with invertebrates?

Yes. Many years ago this was labeled for ponds

This should be fine for a Brackish tank?

You can use it however the KH of a brackish tank might prevent you from lowering the ph. Please contact API at 1-800-847-0659 and we can help.

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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

Product ID: 12774984

Details

Brand
API
Item Form
Liquid
Item Weight
4.8 ounces
Liquid Volume
4 fluid ounces
Number of Packs
1

🐠Safe for fish & plants

📏4 fl oz precision dosing

🧪Phosphate-free formula

₹ 1450

Duties & taxes included

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Description

🌊 Elevate your aquarium’s vibe—because your fish deserve the perfect pH balance!

TRUSTED LEGACY - Over 50 years of research-backed aquarium care for confident water management.
FISH PLANT SAFE - Formulated to protect your aquatic ecosystem, ensuring vibrant, healthy life.
PRECISION P H CONTROL - Easily raise freshwater aquarium pH to ideal levels with exact dosing.
PHOSPHATE FREE FORMULA - Maintain crystal-clear water without promoting unwanted algae growth.
SLOW STEADY NEUTRALIZATION - Gently balances acidity to avoid shocking your aquatic environment.

API pH UP is a 4-ounce liquid solution designed to safely raise and stabilize the pH level in freshwater aquariums. Its phosphate-free formula prevents algae growth while protecting fish and plants, making it ideal for weekly pH adjustments to maintain a thriving aquatic environment.

Specifications

ASIN	B0002AQMVO
ASIN	B0002AQMVO
Allergen Information	Apple Free
Best Sellers Rank	#10,508 in Pet Supplies ( See Top 100 in Pet Supplies ) #75 in Aquarium Water Treatments
Brand Name	API
Customer Reviews	4.6 4.6 out of 5 stars (3,665)
Date First Available	June 15, 2004
Department	Unisex-Adult
Global Trade Identification Number	00317163030318
Item Form	Liquid
Item Type Name	Aquarium pH adjuster
Item Weight	4.8 ounces
Item model number	31C
Liquid Volume	4 fluid ounces
Manufacturer	Mars Fishcare
Manufacturer	Mars Fishcare
Manufacturer Part Number	31C
Manufacturer recommended age	1 month and up
Model Number	31C
Pet Type	Fish
Product Dimensions	1.5 x 1.5 x 5.25 inches; 4.8 ounces
Target Species	Fish
UPC	317163030318
Unit Count	4 Fluid Ounces

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