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🌿 Master your grow with precision pH power!
FoxFarm Cultivation Nation pH Down is a citric acid-based liquid solution designed to lower and stabilize the pH of nutrient solutions between 5.6 and 6.8. Suitable for both soil and hydroponic growing environments, this 1-pint formula ensures optimal nutrient absorption and healthier plants. Trusted since 1984, FoxFarm delivers a reliable, easy-to-use product that professional growers rely on to maintain ideal growing conditions.







| ASIN | B08SJ6L179 |
| Best Sellers Rank | #19,207 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #626 in Garden Fertilizers |
| Brand | FoxFarm |
| Brand Name | FoxFarm |
| Coverage | Medium |
| Customer Reviews | 4.5 out of 5 stars 526 Reviews |
| Included Components | fertilizers |
| Item Form | Liquid |
| Item Type Name | fertilizers |
| Item Weight | 16 ounces |
| Liquid Volume | 1 pints |
| Manufacturer | Fox Farm |
| Model Number | FX17040 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | FX17040 |
| Specific Uses For Product | Hydroponic |
| Target Species | plants |
| UPC | 752289270130 |
| Unit Count | 16 Fluid Ounces |
| Warranty Description | Warranty |
C**7
Does what it says it’s supposed to do
Raise the pH it was good. It works good.
R**A
Powerful Downer
Great stuff. I cautiously added just a little to my ten gallon reservoir, ph took a good dive. Had to add more tap water to bring it up to 6. I would recommend a ph meter. As water may differ in ph, so would the amount of solution needed per gallon. Add very small amounts, and test. This stuff is hands down solid.
D**F
Easy to use
Works great
C**L
Good mild ph down
It’s a good citric acid based ph down. It is on the mild side in terms of concentration. I have hard water with a high ph and it takes quite a bit of it get a drop in ph.
C**A
A little PH down goes a long way!!
Excellent Stuff for any type of plant whether vegetables or otherwise. I've used their whole line of liquid nutrients as well as a few of their soil nutrients and all my plants do considerably better when adding these products to them. ⭐⭐⭐⭐⭐
M**K
Strong PH Down Dosage
Stronger than other PH Down products I’ve used, make sure to gauge PH after small additions, this product goes a long ways.
K**H
Very Concentrated
A little goes a long way! This stuff is strong so be cautious!
R**E
Temporarily lowers pH
I can't say that it doesn't work because it does. It will lower the Ph level. The problem I seem to have is that It will not hold it for very long. I can add a couple ml of this stuff to the DWC and it will be back up after a couple of hours. Is that normal? I don't know but it really annoying. Going to grab another pH down product and test it out.
Trustpilot
3 weeks ago
2 weeks ago