DailyBlastin
Well-Known Member
so i wanted to come back to update that my 1230ppm solution did infact continue to have a downward ph swing. Can anyone give some suggestions as to why this may be? it made sense when it was doing it at almost 1700ppm as overdosing nutrients is known to do that but 1200ppm is not an overdose.. i did a test sample with just my tap water and over 24 hours the ph stayed at 6.2 over 48 hours it went up to 6.4 so logically that tels me it must be the nutrients themselves dropping the ph, i use all dyna-gro products- pro-tekt (which actually raises p.h. upon application) mag-pro, and bloom are the only 3 nutes used in that rez.I recently installed a bluelab gaurdian monitor for this purpose and its a good thing i did, my first res fill with it i did my nutes as i always have, it turned out being 1670ppm (just under 150 of that from the tap) what i never knew before was that i was dosing too much and my ph was dropping every couple days because of it, i just filled the res again yesterday and only dosed to 1230ppm and so far ph has stayed right at 5.6, i dont expect to see it dropping at this level but will update if it does. I do 4 plants perpetual in a 2x2 so theyre always at different stages of flower but i use the same feed for them all, when a plant gets to its final week i will shut off the feed line to that plant and just give water manually until its chopped.
edit: also it may be worth noting that my rez is an entirely sealed setup, its connected to a chiller so there is constant circulation and stays between 66-70 degrees but everything is connected using proper bulkhead fittings and pvc so perhaps the lack of fresh oxygen is a factor here?