NorCalHal said:
Man, it is so hard for me to tell anyone what I feed, not because I don't want to tell them, I just look at the plants each week and make a call.
I usually use 70 gal resevoirs and fill to about 55 gals. I'm an okie, so I still go by cups. So, say on week 3, with flowers starting to show, height about 30" or so and in great health, I would hit them at 2 cups Brown, .5 cup green, 2.5 cups red. I couldn't tell you if it is even close to what GH recomends, but that is just an example.
Here's the breakdown of the numbers:
US........Canadian.....Australian
1/4 tsp.....1 mL............1 ml
1/2 tsp.....2 mL............2 ml
1 tsp........5 mL............5 ml
1 Tbl.......15 mL..........20 ml
1/4 cup....50 mL..........60 ml
1/3 cup....75 mL..........80 ml
1/2 cup...125 mL........125 ml
2/3 cup....150 mL........170 ml
3/4 cup....175 mL........190 ml
1 cup.......250 mL........250 ml
1 quart......1 liter..........1 litre
55 gals. @ 2 cups Brown, .5 cup green, 2.5 cups red
2.0 cups = 500ml per/55 gal = 09.10ml of Micro per/gallon
0.5 cups = 125ml per/55 gal = 02.27ml of Grow per/gallon
2.5 cups = 625ml per/55 gal = 11.36ml of Bloom per/gallon
For flowering, GH recommends 10ml Micro per/gallon, 5ml Grow per/gallon and 15ml Bloom per/gallon.
So, by comparing the two sets, you're using almost the same amount of Micro, half the Grow and slightly less of the Bloom per/gallon that GH recommends.