I originally started with 3 part Fox Farm (got tired of trying to figure it out). I read about the Lucas Formula and I havent looked back. Somuch easier to calculate and add-back, I couldnt beleive it . The only thing I add is Cal-Mag (if I see its needed), H202, and a little SuperThrive.

Lucas Formula FTW!!!

I still have 3 full bottle of the FoxFarm that I will likely never use now.

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Could u please tell me what the tds@ 7.0 conversion means..?? I use the lucas formula w/gh micro and the bloom.and does that flowering formula 0-8-16 come out to be about a tspn and a half of micro per gallon of water and the bloom is about a tblspn per gallon of water right??? I am using a 18 gallon resevoir which toppe off to bottom of netpots is right at 12 gal. So am i to add a tspn and a half per gal. And approx. A tblspn of bloom per gal.??? It seems to bring the ppm up to about 1500 ppm and this seems to high, what do u think or anyone about this?? Thanx

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DR.JAYNE

its good to know that theres a "formula" to what ive all ready been doing. Im using GH and chaching bloom enhancer, ph and tds corrected.
Are you absolutely sure about removing the grow solution? I understand that if the plants are using less nitrogen than other nutes, youre going to get toxic nitrogen levels after a few weeks... prob harder to diagnose than nitrogen deficiency, but if its proven ima try and return this 2.5 gallon grow i just copped...

can i use that formula with Botanicare 3 part ??

No. Different formula

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AMMENDMENT 20 COMPLIANT - Rocky Mountain High

Im sure you can, its the same formula, do yourself a favor and google ASK LUCAS its somewhere in the 1st 5 pages

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I heart scissor smuck

Yes, it has all the N they need. I use the Lucas formula with Floralicious Plus (N) (1 ml/gal) and Liquid Koolbloom (P-K) in weeks 2-4 (5 ml/gallon) and 5-6 (7.5 ml/gal). Both are GH products on the Keep it Simple Recirculating Program. Alone the ppm is ~1300, when I add Koolbloom and Floarilicious it can get up to ~1500. pH is 5.8, drifts up to 6.3 after a few days, that's when I top it and pH down back to 5.8. I have pics in my journal. I don't even know if I need the Floarialicious or not, I might try a cycle without and see what happens... I change the res every two weeks but Lucas adds nutes with addback water and changes once per cycle.

Lucas Formula is nice because GH makes it simple. I plan on eventually stopping the Floralicious Plus and working with H2O2 instead.

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Journal - Small SOG NL#5: 600w HPS Hydro Flowering, 250w MH Soil Mothers, 110w CFL Aero Cloner.

i grow in soil is the lucas formula used in soil too or just hp i dont understand it either yeah i know could someone explain it to me in laymans terms??

wow ,, this is the first time back in a month er so(dealing with a PS3 call of duty addiction) pray for me , please.
Im not sure of the complexities but the laymans is 8-16 which does not get you to your target 1300 ppm it more like 11-20 and Im there Ive used alot of nutes in my time under the artificial suns and Im sure its the easiest program Ive ever run Im sure my yields have doubled Ive altered the program a bit I change out my rez every 10 days and use grotec's H2o2 for 24hrs , I was really let until I realized that its got nothing to do with the size the density is almost crazy,, guys Im a grow dummy and Im ok with it but Ive got 50 in my AF60 and Im sure that its gonna be a good time 1300 and this time Im using a flavor additive like pineapple rush or grotec new line of tasties

LUCAS FORMULA= good time

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I heart scissor smuck

so by the lucas formula 0-8-16 - For Flowering cycle (12/12) G-M-B (Grow-Micro-Bloom)

I should put 88 ml of micro and 176 of bloom in my 11 gal res ?