Crysmatic
- 529
- 43
That link is broken, but I found forums in which he speaks. Lucas is like the 'hopeful' who bends spoons in the matrix. unreal information - thank you!
he might present his belief that pbp + calmag would keep up with your complex recipe. he says that environment is way more important than nutes...and i think i'm reading that in this thread.
is pH's ppm sheet similar to this:
http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm
it's funny, but i was reading jan/feb 10 'urban grower' today, and it had a formula to calculate res top-up water ppm. (Lucas had lost his formula)
(desired ppm - current ppm)/desired ppm * nute rate * res volume = volume of nute to add to res
e.g. (1300-1000)/1300*8ml/gal*50gal=92.3mL
note that 8 ml/gal (in this example) will give 1300 ppm in ro water (this also works with ec...it's just % difference)
in the same issue, it explained how to determine ideal ec rate. if the fertigation is too low, res ec will drop. if fertigation is too high, res ec will rise. the example was for recirc systems. is this accurate for measuring run off in soilless as well? or do you just go by plant visual cues? it seems to me that a plant will grow optimally within a range of ec...and staying to the upper end just wastes nutes. what's your ideal feeding program? do you just push the plant to mild tip burn and back off a bit? your thoughts?
btw my spreadsheet calculates nute cost per cycle...
he might present his belief that pbp + calmag would keep up with your complex recipe. he says that environment is way more important than nutes...and i think i'm reading that in this thread.
is pH's ppm sheet similar to this:
http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm
it's funny, but i was reading jan/feb 10 'urban grower' today, and it had a formula to calculate res top-up water ppm. (Lucas had lost his formula)
(desired ppm - current ppm)/desired ppm * nute rate * res volume = volume of nute to add to res
e.g. (1300-1000)/1300*8ml/gal*50gal=92.3mL
note that 8 ml/gal (in this example) will give 1300 ppm in ro water (this also works with ec...it's just % difference)
in the same issue, it explained how to determine ideal ec rate. if the fertigation is too low, res ec will drop. if fertigation is too high, res ec will rise. the example was for recirc systems. is this accurate for measuring run off in soilless as well? or do you just go by plant visual cues? it seems to me that a plant will grow optimally within a range of ec...and staying to the upper end just wastes nutes. what's your ideal feeding program? do you just push the plant to mild tip burn and back off a bit? your thoughts?
btw my spreadsheet calculates nute cost per cycle...