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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⚡ Elevate your tank’s pH with clarity and confidence!

RAPID P H ADJUSTMENT - Instantly elevates aquarium pH for a healthier aquatic environment
COMPACT CONVENIENT - 4-ounce bottle fits perfectly in any aquarium maintenance kit
CRYSTAL CLEAR FORMULA - Raises alkalinity without clouding your tank’s pristine water
TRUSTED BRAND QUALITY - From Aquarium Pharmaceuticals, made in the USA for reliability
OPTIMIZED FOR AQUATIC LIFE - Maintains ideal water conditions to keep your fish thriving

API PH Up is a fast-acting, colorless liquid designed to safely raise and stabilize the pH level in your aquarium. Its clear formula ensures no cloudiness, maintaining a pristine aquatic environment. Packaged in a convenient 4-ounce bottle, it’s a trusted solution from Aquarium Pharmaceuticals, made in the USA, perfect for professional and hobbyist aquarists aiming for optimal water conditions.

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Brand	API
Liquid Volume	4 Fluid Ounces
Item Weight	0.3 Pounds
Item Form	Liquid
Manufacturer	Aquarium Pharmaceuticals, Aquarium Pharmaceuticals
UPC	317163030318
Global Trade Identification Number	00317163030318
Manufacturer	Aquarium Pharmaceuticals
Country of Origin	USA
Item model number	31C
Product Dimensions	3.81 x 3.81 x 13.34 cm; 136.08 g
ASIN	B0002AQMVO

API PH Up Aquarium PH Adjuster, 4-Ounce

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