By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
First timer. Not sure about the nutrient strength. I'm using de-chlorinated tap water which has a base EC of 300 uS. I then add nutes in a 20L solution to get that up to around 580uS including the pH down.
I pH down from 7.45 to 5.6 and then plan to let it rise up to around 6.3 over the next week before i do the res change.
Please feel free to advise me in the comments!
Week 2 - The root growth is impressing me, but the stems / leaves arnt really filling me with confidence. Any ideas anyone?
I have plotted my readings of the past few days, I usually measure at night time for me which is half way through the day cycle for the plants.
Should I up my nute dosing?
Thanks.
I've been having issues with one of my plants, now the second one has started showing signs too! I have two autos in separate 20L solution bubbler buckets. One is producing brown spots on the leaves(lower leaves first) which eventually spread. They both get fed the same, the only thing I notice about the problematic plant is thst ppms is slighty higher, maybe by 50ppm and it seems to rise in pH faster than the other one. I have air stones, res temp is 18-20celcius, I use a Migro 100 COB light which is 12-14" away from the top of the plants. Using RO water (4ppm) and like 10% recommended dose of Canna CalMag, Plagron Hydro A and Plagron Hydro B. Ppms don't change very much (maybe 1-5 ppm a day in either direction) so I'd say they are stable. I have seen that and stable ppm and an increase in pH means the plant is feeding and its a good thing.
I'm thinking my issues might be with pH? Possibly locking out boron or Manganese? or Cal / Mag?
Or could it be that because I pH down one a day that I'm precipitating out Calcium / Mag?
I've also just learned that adding pH down directly to the Res will have an adverse affect on the nutes and can cause localised propagation of the nutes, specially calcium...?
Please share your knowledge with me
MistaJim
