How Much PH up or down???

out of all of my years of growing, I have never read, had anyone tell me, nor found info on the web, on how much PH up or down I should use per Gal., or rather i should PH my water before or after I add my nuits, it's always been a guessing game.. So is there anyone out their that can help me with this problem? PLEASE AND THANK YOU

First , I would suggest TESTING your water ( no matter your source ) whether using TAP , RO or other. This way you can find your baseline PH. Once you determine your nute ratio for your feeding , check your " finished solution " PH.

From there you can determine whether you need to TWEAK the final PH range.
This way you don't accidentally knock your range out of wack , or if finished solution buffers itself into a usable range. Study the FEED SCHEDULE made for your nute line to determine the PPM range to suit your growth week. ( these are designed as a guide so remember to cut strength to 1/4 or half until you see how well plant responds.

PH is an important check to do throughout grow to keep the plant uptake only what it needs. Forget trying to MAX FEED plants , they only can tolerate so much.

Get a simple PPM/TDS PEN and PH Tester , don't bother with PH test strips.

Yeah what he said^^^

"How much" depends on water source, strength and ratio of nutes, additives, buffers etc.

I'll say though, that it takes a lot less to ph water before adding nutes.

I ph my water to 5.8 then add veg nutes and it is still 5.8.

I ph my water to 6.2 then add flower nutes and it changes to 5.9.

Hope this helps

Yeah, the ph of your starting water is a major factor, the acidity of the nutes your using. In my 20 gallon res, after adding nutes (very acidic nutes) I have to add about 4 capfuls of ph down to get to 5.5-5.6ph. I've just started mixing one gallon jugs for smaller plants and I've been using a dropper. If I add 1/4tsp of nutes and 20 drops of ph down, the ph comes out to 5.6. The ph of my tap water is 7

This will be different for everyone.

Thanks every1 for all of your responses, I have a Hana Combo that I use often. My water comes out of the tap at around 7.1 and I also have a RO system that I haven't used yet, that I think I will set up.. Never tested my PH before adding my nuets so I will also try that.. once again thanks all greatly appreciated ...

Takes me 2ml per gal on the initial set, it then raises back in 24 hours and then takes 1ml per gal to get back and will hold in range for a week.

Carolina Dream'n said:

Takes me 2ml per gal on the initial set, it then raises back in 24 hours and then takes 1ml per gal to get back and will hold in range for a week.

Click to expand...

Right on Carolina Dreamin!
A buddy told me pretty much the same thing but he said 1ml per gal.. Once again thanks, highly appreciate this info..