So as long as we put in the same ppm and same ratio of NPK the girls love and refresh it when needed with the same ppm and ratio of NPK we should be able to maintain the solution for 1 or 100 grows respectively without having to start over... Theoretically speaking right???
on the right track but not nessisarily...u want to run 20-10-20 the whole time at a constant ec but you have to identify what is being taken out and replace it.. what is being taken out is base don 4 things.. leafs stems root and fruits... table 3 from the paper shows the ratios being taken out (i tried to copy paste but couldnt get it to look readable)
so if u were to think nugs has 3 stages of growth
veg- leafs stems roots
stretch- leafs STEMS roots
flower- roots? flowers
ud want 3 differnt refill solutions to refill the correct ratio to get u back to 20-10-20
iv kind of done this and posted what my ruff estimates of what the refill soltuions would be somewhere above
(i didnt just take bugbees refill solutions from table 4? i think cuz i thought cannabis is a little different than tomaotes but i only made some inor tweaks)... the point i was kinda trying to make w that post was the ratios are all very similar. the veg, stretch, flower refill solutions i mean.. therefore it just doesnt seem that hard especially considering plants can withstand a rather large imbalance w no ill effects.. from what i undertsnd u can run from a 2-1-2 to a 3-1-4 and be safley fine. so u start at a 2-1-2 try to calculate what is being taken out and replace it (w like a 5-1-5 or something) and if u think ur outside 2-1-2 to 3-1-4 dumop it out and start over.. i should stress i keep saying npk but the other stuff matter aswell... especially Calcium
i think the hardest aprt of this is figuring the ph amdjustments into the feralizer numbers. bugbee says in the paper using phosporic acid alone will become toxic for the plants... something about the uptake being so quick if ur constaly phing w P ur going to be at toxic levels in the plant. He reccomends using nitric acid as a form of ph control and says it can "supply half the nitrogen".. iv been working this out and without any nitric acid on me its hard to see X ppms of nitric acid will drop X ph and all that but i think its probable going to work better with the nitric acid...