Quote Originally Posted by Rusty Trichome
Again...IDK. This hydro stuff is way beyond me
Obviously. Maybe next time do some research before you offer "advice" that is essentially meaningless?

The Lucas formula is a fairly well known nute program that uses GH products, normally their FloraMicro and FloraBloom - FloraGrow is NOT used. It was formulated specifically for growing marijuana, and offers a number of benefits - namely that it's very simple and does not require the grower to change out their reservoir at any point of the grow. Those of us who've used the formula have gotten very good results with it.

Admittedly, there are other experienced growers who have gotten better results with other formulas - slightly higher yields and/or somewhat better taste. But for those of us, like myself, who are happy to just get from seed to weed, the Lucas formula works wonders.

To OP: If you're working off the "original" formula, Lucas recommended using 0-5-10 for veg, and 0-8-16 for flowering. He's since revised these recommendations. He now recommends using 0-5-10 for the whole grow under flouros, and 0-8-16 for the whole grow under HID. If you bumped it up to 0-8-16 under your T5's, that probably explains why you burned them. Also, as mentioned, double check your meter calibration. I had a pH meter go bad on me on my first grow and all hell broke loose.
Help_Needed Reviewed by Help_Needed on . Help noob with new clones PLEASE! I have had my girls now since December 14th. I am trying my best to get these going. I am using the Lucas method with GH nutes 0-5-10 B-M-G pH is 6.15 PPM is 740. I started them on this on Dec 30th with half strength for a day and a half. I had to change to full strength due to a bone head move that caused a leak. The plan was to run 1/2 strength for a week and switch to full. I had a res with full strenth when I had the leak so just switched out to full early. Water temp is 70F two long air Rating: 5