Jayefc1
Member
Hi had the same issue with the black edging around my plants thought it was bba my tank is 23l with good circulation I run my co2 at 1bps and ei dosed at 5ml macro 5ml micro alternate 5 days a week with 2 rest days and 50 percent water changes on Sunday when the plants established I got the black edging and searched on line all I had to do was increase my micro to 7.5 ml and within 2 week it was gone and my plants started pearlin like mad I did prune all the worst leaves away so the new growh was getting the energy rather than the old growth hope this help had my chirios led on 5 of 7 the whole time and my co2 defuser at my intake Lilly to help spreading the bubble around more efficiently