Hello, any assistance on fixing this persistent algae would be appreciated. Tank is about 6 months old no corals. 3 fish a shrimp and a snail. I have one Reefbreeders micro led lamp tank is 20 gallons. Using a marineland canister filter. Weekly 10-15% water changes with RO water from LFS. I use Red sea salt. Pictures and levels test are from today. Purple hairy algae no matter how much i try to remove it just keeps returning days later.
20 Gallon tank
Salinity-1.024 on refractometer
(API Test kit)
pH- 8.0
Ammonia- 0.25ppm
Nitrite- 0ppm
Nitrate- 2.5ppm
Phosphate-1.0ppm
Calcium- 440ppm
KH- 196.9
Copper- 0ppm
20 Gallon tank
Salinity-1.024 on refractometer
(API Test kit)
pH- 8.0
Ammonia- 0.25ppm
Nitrite- 0ppm
Nitrate- 2.5ppm
Phosphate-1.0ppm
Calcium- 440ppm
KH- 196.9
Copper- 0ppm