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⚡ Master your grow with precision pH power!
Atlas Scientific’s pH Up and Down 250ml set delivers precise, ready-to-use liquid solutions designed to optimize pH levels in hydroponic and aquaponic systems. With easy dosing instructions and no dilution needed, it ensures rapid, stable pH adjustments to maximize plant health and yield.




| ASIN | B00P1MQWK4 |
| Best Sellers Rank | #53,167 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Chemical Standards |
| Brand Name | Atlas Scientific Environmental Robotics |
| Container Type | Bottle |
| Customer Reviews | 4.5 4.5 out of 5 stars (4,414) |
| Item Form | Liquid |
| Item Weight | 0.5 Pounds |
| Manufacturer | Atlas Scientific |
| UPC | 857434005305 |
| Unit Count | 16 Ounce |
| Volume | 250 Milliliters |
S**N
Does what it says
Easy use good product does what it says
T**T
Helped Cure My Hydroponic PH Blues
The village we live in has well water from a Lake Superior aquifer and the TDS and PH is not great. I was running at around 7.5-7.8 PH in my hydroponic system where I am growing, spinach, swiss chard and a number of lettuces. Optimal PH is 6-7. I have a 10 liter #4 drip system and the instructions said to add 3ML of the solution per litre but also cautioned that a little goes a long way. I halved the recommended mix and added 15ML of PH Down to 10L of water. Within 30 seconds my PH was at a stable 6.5. Super happy, great product, highly recommend!
A**R
as described!
As advertised, shipped quick, TY!
C**E
Mostly good
The bottles are in plastic bags, the ph-up seal was broken and was leaking into the bag. Other than that it works just great. A little goes a long way with this liquid. Pretty good
A**W
A little goes a long way!
I’ll start by saying I’m using this on water that’s already been through a 4 stage reverse osmosis system. That being said I’m already pretty close to the desired parameters. I’m making my water in gallon jugs and using a small syringe to add the solution. I needed to lower my PH just one full number and all it took was less than 3 ml of solution to do it. This should last quite a long time if it continues to be this efficient. So far I’m pretty happy with it. The bottles are pretty small but as little as it takes to adjust your levels it doesn’t really matter.
S**N
Fantastic!
Atlas Scientific pH Up and Down 250ml (8oz) works great. a very good value for the money. I highly recommend.
K**A
Bent bottles and broken seal
Seal was received broken and bottles bent
G**N
Easy to adjust your PH
worked very well my ph is around 9.3 from my tap water I was able to adjust the ph to around 6.0 easy with this product to grow my cannabis plants Every time I watered them Great product!!!!!
ترست بايلوت
منذ أسبوعين
منذ 5 أيام