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.

Api Ph Up 4 Oz | Desertcart Nicaragua

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Description

⚡ Elevate your aquarium’s vibe with precision pH control!

BPA FREE ECO FRIENDLY - Protect your fish and the planet with toxin-free, responsibly packaged water treatment.
SAFE FOR ALL LIFE STAGES - Formulated to support fish health from fry to adult, ensuring a thriving aquatic environment.
LONG LASTING 4 OZ CONCENTRATE - More treatment power than typical small droppers—perfect for consistent water care.
BALANCE YOUR AQUARIUMS ECOSYSTEM - Raise pH levels quickly to maintain optimal alkaline conditions for diverse fish species.
TRUSTED BY THOUSANDS OF AQUARISTS - 4.5-star rating from over 2,700 reviews—join the community that keeps tanks vibrant and healthy.

API pH Up is a 4 oz liquid solution designed to safely raise and stabilize pH levels in freshwater aquariums. Ideal for all fish life stages, it ensures water stays alkaline when pH drops below optimal, supporting healthy aquatic ecosystems. BPA-free and highly rated by thousands of users, it offers reliable, long-lasting water treatment for professional and hobbyist aquarists alike.

Specifications

ASIN	B0002AQMVO
Allergen Information	BPA-Free
Brand	API
Brand Name	API
Customer Reviews	4.5 out of 5 stars 2,737 Reviews
Global Trade Identification Number	00317163030318
Item Form	Liquid
Item Type Name	API pH Up, 4 OZ
Item Weight	0.3 Pounds
Item form	Liquid
Item weight	0.3 Pounds
Liquid Volume	4 Fluid Ounces
Liquid volume	4 Fluid Ounces
Manufacturer	API
Manufacturer Part Number	31C
Model Number	31C
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	317163030318
Unit Count	1 Count
Unit count	1 Count

Reviews

M**N

Excellent

Excellent and I recommend it

27.01.2024

H**.

Bueno

Muy bueno y es como en automático que funciona, no ocupas mas productos para mantener a raya el ph del agua

27.03.2026

N**K

Works well

No complaints.

8.11.2021

R**L

Good

18.08.2018

M**R

Finnaly a good size bottle

Love the size that should get me longer than the small dripper we all get in the first water treatment kit.

12.09.2023

J**E

Good product

Good quality does what it should

26.11.2024

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C$1902

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In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

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TrustScore 4.5 | 7,300+ reviews

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