Hi Guys. So my Reef tank has been running nearly 6 month now. And no matter what i do i cannot seem to get rid of this Algae that returns after 1 week or so, once i remove it. When it grows on the sand at the bottom i cannot siphon it of without taking loads of sand with it which is another issue. I have been doing on average 20% water change a week for at least 4 week trying to get it to go. My tank is a 100L with built in sump at the back and i have Phosguard in there. I use a Ai Prime 16HD and run all blues around 65% and 8-10% white, 8% red and green. My Params are:
Amm-0
Nitrite-0
Nitrate-1
Phos-0.05
Cal-460
Mag-1220
Alk-7 (which i am raising slowly)
PH-8
Salinity-1.025
*Any help you can offer is greatly appreciated, so thanks for taking the time to look.

Amm-0
Nitrite-0
Nitrate-1
Phos-0.05
Cal-460
Mag-1220
Alk-7 (which i am raising slowly)
PH-8
Salinity-1.025
*Any help you can offer is greatly appreciated, so thanks for taking the time to look.


