pH and water quality

chadgMarch 3, 2008

Hello,

I got my floating raft system setup in the basement this weekend. I also have the lettuce seeds started and hope to transplat them into the hydroponics system soon.

My pH is high. Like 7.8pH and 250ppm at 59 degrees. I used our tap water and i know it is pretty hard.

I got some pH down from the aquarium store (was easier then driving an hour to the nearest hydroponic store) and added some of that (said two drops per gallon). It seems to bring the pH down to 7.5 last night, but when i checked it again this morning it was back up to 7.8.

Do i go buy bottled water and not use our tap water?

Do i need to get better pH down solution?

Thank you for reporting this comment. Undo
gnomico

I would definitely let the tap water sit out for at least one if not two nights. I also aerate the water with a air pump/stone while it sits out. While there may be similar or better products, I use Ionic Grow Hardwater as it seems to keep the PH stable. By the way, my tap water is around 300 ppm 7.8 PH. I do use half reverse osmosis and half tap water. Using the Ionic nutrient, I don't have to add any PH down.

    Bookmark   March 3, 2008 at 9:33AM
Thank you for reporting this comment. Undo
chadg

Thanks for the infromation!

I read up on the Ionic Grow Hardwater and it appears to be a really good product. I will pick some up and give it a shot.

    Bookmark   March 3, 2008 at 10:23AM
Thank you for reporting this comment. Undo
greystoke(South Africa(11))

You can use ordinary white spirit vinegar to lower the pH. Use a 5cc syringe to dose at ± 1cc/g for a full point down. This may vary depending on the composition of the water. So try it out first.

    Bookmark   March 3, 2008 at 11:01PM
Thank you for reporting this comment. Undo
willardb3

Vinegar, lime juice and etc do not control Ph well in nutrient solutions.

    Bookmark   March 4, 2008 at 10:02AM
Thank you for reporting this comment. Undo
plantboy_grower(9)

willard3 / anyone,

Do you know how PH is controlled in an "organic" system? Is it just a matter of keeping up with it more often by using citric acid or something, or how is this done? I'd love to compare and see how this is done without a chemical in hydroponics.

I know that Earth Juice has a PH adjuster but I haven't used it and the guy at the hydro shop said you'd need to use a lot of it - I don't know, I have no experience with this but would like to know for the future.

Also I am currently using phosphoric acid and it seems like I have to add more than the bottle says per each point drop - I don't know still trying to figure it out.

Here are some links about the Earth Juice products:

The PH adjuster (Natural Up and Down):
http://www.earthjuice.com/index.html

Hydroponics:
http://www.earthjuice.com/hydropon/index.html

Hydro-Organics:
http://www.earthjuice.com/hydroorg/index.html

    Bookmark   March 4, 2008 at 6:21PM
Thank you for reporting this comment. Undo
greystoke(South Africa(11))

The Earthjuice pH adjuster is probably an organic acid (such as: vinegar, citric acid or tannic acid). Tannic acid is sometimes obtained from oakleaf extracts.

Phosphoric acid is excellent as a hydro pH adjuster, but in my country it is difficult to obtain in smaller quantities, hence I use bicarb and vinegar as up- and down-adjusters. Been doing this for 6 years now.

    Bookmark   March 4, 2008 at 11:56PM
Sign Up to comment
More Discussions
Hydroponics
Hi all! I'm a beginner at hydroponics gardening......
skttls
Who Else Has Vertigro Stackers?
I'm curious how many people are using Vertigro Stackers...
twisted76017
organic hydroponic ferilizer
I am looking for a good source for organic hydroponic...
little sur farm
Using Gravel as a growing media
This thread is created, and only for people who have...
homehydro
Started the hydro garden
I watched Bobby grow long enough and got busy. I bought...
radrob
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™