I've got pinholes, I mean my plants. What other causes this? my no3 ~5, phos don't know but I put 1-2 drop of enema once every 2 days, dose flourish 1/3ml/day, I've put a bunch of K, like 1 tsp over the last week. diy co2 ~20ppm 40w cf spiral 5k. My tank is 10gal. substrate is 3/4 " top soil topped with 1/2 " black sand. There's about 1/4cup of laterite on the very bottom. Very little algae once I got a bristlenose pleco and 3 otos. Thanks for any help.