Hey Ksj (sorry to hijack your thread Jackmc... one quick question!)
Just a quick question for you Ksj. I'm using RO water and I also generally add back 0.3 EC worth of cal/mag. I'm just wondering about micro nutrients. Canna do as part of their 'Mono Range' a 'Micro Nutrients' which has a bit of all the things like boron, manganese, copper, etc. Would you thinking adding like.. half a 0.1 EC worth would be a good idea? Or would it be more harmful than good?
It's just that with my Autopots (growing in coco or soil) it's fine. But sometimes with DWC I seem to be getting a bit of a Zinc type deficiency. (Interveinal yellowing of the upper leaves).
BTW I think with Advanced Nutrients Sensi A&B if you are feeding high enough EC you don't need cal/mag as this nutrient range seems to already have lots of cal/mag in it. Advanced Nutrients seems to be the best nutrients in my experience for RO water. I tried GHE and Canna but they both kinda suck with RO water in my experience.
Jackmc, back to you. I'm unfamiliar with this 'Magic' nutrients you speak off but if you find the nutes aren't working for you after a few grows and things aren't continually improving, think about switching nute brands. I tried a number of nutes before I started using Advanced Nutrients who are my current favourite.
Feeding wise you want to aim to always gradually be pushing the nutrients so they're slightly stronger and stronger each time. The reason being as it increases pressure in the root zone and around the plants. This pressure pushes more nutrients into the plant. If you do it gradually and continually you keep this gradual pressure increase up and the plants will acclimate to the increase in pressure, then you push it a bit more, then they like it and get used to it. Then danger is increasing the feed too quickly at one time and the plants aren't used to it. So keep pushing them, gently but continually ever few days ever so slightly. You want the plants to be dark green. If they start going too dark, you want to back off just a touch, give them a bit of time, before resuming the pushing them schedule. You do that all the way till the last two weeks, where you back off to say 3/4 for the second to last week, then the last week basically back off completely let them flush and die
I hope that helps and nothing too basic in there, it's hard to know what's helpful and what's no sometimes so my apologies if I say anything that's too basic for you.
