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Roots are pretty decently white, some minor brown near the top but very little. I hear you about high EC but that plant is running in 0.2 EC. We are talking 200 ml of H&G plus 100 ml of cal mag for 200 gallons. By serious you mean previous to them exploding or turning to crap?
Your ratio of CalMag to A/B is what is causing you issues. The plants are being supplied with C/M for in excess relative to the other minerals necessary for healthy growth. In your case 33% of your total mineral load is C/M.....it should constitute no more than 15-20%.
Remember, your A/B has ample amounts of Ca, Mg, Fe and N...all of which are also supplied in the C/M your dosing in excess.
I've spoke with the H&G folks and they recommend no more than 1 mil per gallon of C/M if a grower feels it necessary to use. With small plants this can equate to 0.5 mils to supply added C/M.
what should i set temp should i set my chiller?
Jalisco Kid and others said that at some pints they ran their water temps as low as 57. I think that was late stage flower, to induce colors and help finish things up, if I recall correctly... That's too cold for good plant growth.
I also run my water at 62-65, trying to keep on target at 64. I'm told- again, anecdotally from what others have said here- that temps below 65 inhibit root rot and pythium.
These temps don't seem to kill off beneficial microbes, so I'm thinking that's a good temp for a 'live' approach, too.
5.5" vs 8" net pots... Need help- was told in flower to have water at bottom of net pot, bit I've also read to have 4 gal's per module (8 gal capacity). The bottom of a 5.5" net pot is much more than 4 gal's per module. So what's up? Are the 5.5" net pots SHORTER than the 8" net pots???
Tl;dr: where is the water level in flower and does it ever change??
Thx,
Did my water swap and raised my ppm120 for a total of 640. I flipped to 12/12 and my ph dropped from 6-5.3 in two days. It seems the plants are eating since my ppm is dropping as well...all my roots look perfect. I still have the one plant battling a little stem damage but coming along ok.
Is this normal when you switch to bloom nutes at first? DUTCHMASTER A/B
Do you think I should back off my food a little? raise ph or let it swing?
Am I in for some drastic dealings? I called cch2o but seems they are closed today?
If your pH is dropping, you likely have the nutrients a little strong. You want the pH to rise over the course of a few days. Switch to bloom nutes a week or so after flip. Just my .02...
5.5" vs 8" net pots... Need help- was told in flower to have water at bottom of net pot, bit I've also read to have 4 gal's per module (8 gal capacity). The bottom of a 5.5" net pot is much more than 4 gal's per module. So what's up? Are the 5.5" net pots SHORTER than the 8" net pots???
Tl;dr: where is the water level in flower and does it ever change??
Thx,
deac,
Im sure you're right and Im still kinda new to uc/rdwc.
ph rises up, ppms go down, because of nute consumption... normal yeah...
ph drops and nutes are are not consumed would be overfeed... see some burns yeah..
ph drops and ppm drops would be cause for the start of rot or bacteria...yeah?
My plants are eating ppms (nutes) yet ph falling some, not on the rise!
Thats what Im seeing, however ttystikk has me thinking my nutes were a little high not to the point of burning, but maybe they are slowing? I could be paranoid for nothing. The ladies are eating a little but not even close to what they were in veg.
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