I am just about to introduce nutes to clones that are 2 1/2 weeks old. I want to start out at 1/4 strength, but the bottle recommends 2-5 ml per liter. I am using an organic fert called bio-grow, good stuff. but, 1/4 of 2 is much different that 1/4 of 5. i was thinking of settling somehwere in the middle, but what does you guys think?