Glued Sand Bottoms?

[deacon hemp]

Originally Posted by lyohemas

Is there a reason?

Thats what i have been trying to figure out.Most ppl either use UV or ozone or both with BB,and all of these ppl have lowered their photoperiod to 4 hours because any more and their sps lightens up or bleaches.Even if they step it up slowly to 6 hours,they still see lightening.Im trying to figure out if its a BB thing as some ppl (on RC) say it is,or if its an ozone/uv thing in correlation(sp) to using a BB.Ruth has a long photoperiod still and has good colors ( i assume) so i think its an ozone thing.