PPM Confusion?

BushyBro

Well-Known Member
Hi guys,

I have a quick question and hopefully i can keep it simple to read,

How often do you add nutes to a reservoir in veg - weekly or adjusted daily?
I clean my res every week - PH seems to adjust itself after i have added the nutes (PH5.5) and the TDS meter is reading between 300-400 PPM , however overnight the ph goes up to 6.3-6.6 - and the ppm down to 200.

So my plants are clearly uptaking nutes, now do i just leave the nute strength as is until the next feeding or top up to 350 again? or just adjust the ph to 5.5? (see my issue - my nutes are correcting my ph? which theoretically eliminates the need to use ph down,) which is confusing me -
 
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