so i have 2 girls in a 4x8x10 closet, 5 weeks old, in homemade "water farm" type connected 5 gallon buckets, with a reservoir and pump spraying fluids from above the clay rocks.i have dropped close to about 100ml of pH down within a 5 day span, yet it keeps rising back up to 6.2-6.3, and the ppm keeps rising too. temps run 75-80, humidity at about 50%, room water temp at about 70-77, using aqua flakes, hygrozyme.

another question i have is aqua flakes says to use 5.5ml of each 2 part nute, per gallon of water, for 1st week of veg. i use 10ml of each nute for all 5 gallons of water in the reservoir, plus 32ml of hygrozyme. That alone brings my ppm to the 400-500 range. If i follow directions my ppm would roughly be around 2000-2500ppm for 1st week of veg?? my question is WTF??? (this is an old pic btw)

You should have put the sprayers inside the buckets aiming up. See if you can change your sprayers to foggers, or drip nozzles. Sometimes in those systems you only have to use about half the nutrients that the schedule calls for. 6.2 or 6.3 isn't too bad. I'd get worried if it was above 6.5

yeah, but 100mls in 5 days????

change your res now. this used to happen to me all the time. i was using a three part nute mix and i think the nutes got out of balance as i topped off over the week and i had no idea what to do. my ph would go up to 6.2, i would drop it to 5.9, every freaking night. eventually my plants suffered and nearly died.
i dont know what aqua flakes are. hygrozyme - i dont remember what that is (peroxide?), but change the res.
are you useing tap water? whats the PH and PPM? maybe you need a nute that is made for hardwater (tap water). i use a micro hardwater in my nutes.

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"Man who are you Gene Autry or something?"

Maybe your ph meter isn't calibrated anymore, or you're not doing it correctly, maybe? They CAN get off from time to time. I'd check that out before I started dumping a bunch of PH down in the water because that's more than a little.

recalibrated 2 week old ph meter numerous times

what kind of water r u using?
if it distilled or ro water....u must have some kind of buffer.....aqua flakes?dont know what they r but it dont sound like they have buffers in them
solution:
if ur tap water isnt too hard ,u can use that cuz it naturally has buffer in it
or used ditilled and switch to better nutes or get a water buffer from pets mart for the range u need
hope this helps

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LATAS

If your waters real super hard even ph buffers from petsmart wont keep it down long. I don't know the first thing about hydroponics but i'm an old hand with aquariums.

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"If you wanna win, CHEAT! If you lose, start a FIGHT!" - very wise man

i meant the buffers for the distilled if the nutes dont have them
tap water already has them and will keep the ph better than distilled

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LATAS

using tap water.