That schedule is for growing in coco. Coco needs less food more often. It's considered a hydro grow. You basically can't over water in coco. If your in compost or a soil you don't want to water every day or try to achieve a 30% run off every feeding. You can, but be sure to let your medium become dry or light by weight. Your risks of root rot are higher not letting your soil dry out between feedings. Coco has no nutritional value for cannabis or any plants. It's only source of nutrition is what you feed it. So any deficiencies are the growers fault. But coco is very forgiving. Unlike composts it shows the results of your feedings much sooner. In 24hrs. you can gauge your feedings and adjust accordingly. It's very easily washed so any mistakes can be corrected with less damage to the plants. In coco the 30% runoff is hard to avoid. I use a 2 gallon pump garden sprayer for feeding. It takes more time but the coco retains much more if fed slow. It seems if your using a half tea spoon of the GH nutrients is soil you should be good. If your not using a PH and PPM or EC meter you need to. Nutrient lockout is very common for growers who choose to wing it. My first grows were good. But as we grow we learn more and learn by error the need of knowing what your plants are being subject to. It can become a labor of love keeping your plants food and water supply at the optimal levels. But at the end of week 9 of flower your girls will reward you for your efforts. Not a huge fan of GH trio. It's not 100% aimed at cannabis. But with some additional additives if can produce some big fat stinky buds. And it's affordable. I have no input on the metal halide. I use LED panels. But 500w @ 30" seems fair with proper ventilation and humidity. But I really don't know. Happy growing and keep the dirt dry PPM's down and PH in the sweet zone. Peace.
