Its too hot im my grow room now its warmer outside, its in the loft and gets hot even though there's 90mm insulation.
I have 2 600 hps running in there, ones in a cool tube i have a 6 inch rvk going full wack but its still 29 deg c in there! im hoping in 3 weeks i will have the cash for 2 240 blackstars to replace one of the hps lights
Thing is none of the other buckets have any rot this was yesterday on the FB2, the slight tint is from the root stim.
theres 120l a min going into 8 buckets so its not oxygen! i think the rot came from the mazaar that had a little bit at the start but now the roots are shiny teeth white! maybe when i put the meter in one bucket then into the next it spread it. now i dip all meters in h2o2 solution between testing.
I think you should be running root stim from the get go as SB does on all his grows. i was using rhizotonic but it will rise the PH by as much as 1 point meaning you need more ph down in my case as im using shitty city tap water @PH 8 i need so much of it i don't want to have to add any more than i need to as it affects the final EC.
I have switched to ph down phosphoric acid now, i was using canna nitric acid PH down but that stuff is lethal it burned the crap out of my foot when i spilt some on it! and also i seem to use way more of that than the phosphoric. i need like 8ml nitric in 10l and 3.5 ml of the phos in the same.
This is the stim im using at the moment and it does not affect the PH in any way and i find that in general my PH is more stable with this than the rizso. and i have to say its very good
http://www.growell.co.uk/bloom-roots.html