Hallo Bro and Sis out there .Anybody can advise me on how to turn the rock to purple?
When I bought the rock , very nice but now or soon become fade.
Now getting 3 pro stage filter hope to reduce po4 .currently using kalkwasser.my calcium=460 .Lighting LED 10W * 6pcs( diy type). tank 4feet. ..
So Please Help me .
thanksss : alot.