I have a 90g mixed reef that is about 2 1/2 years old .for the past two months i have been experiencing diatoms on my sand and lately on my rock and back glass .i have not put anything new as equipment or any plastic materials . Just to make sure that was diatoms and not brown cyano or dynos. i blow the rock with turkey baster and it come out as dust !. Need some ideas on what it could be causing this constant diatoms bloom !
Ca.440 ppm
Kh.8.4
Am.0
Nitrite.0
Nitrates.les than 1ppm (0.50) red sea test
Mg.3600 ppm
Ligjtss .2 hydra 52
Flow . Jebao wp40 and wp25
P sk .reef octopus sro 2000
RO/DI from fountainhead water sistems 5 stage .
Change the sediment every 3 months .and carbon bloks every 7 months .. the only thing i have notise is my di recine has change color just half of it during 1 year of use .. and is a empty gap on the bottom when i turn the filter on about 1 inch ..and the DI recine tumble inside the canister (the DI recine is the one that came original with the filer sistem)
Use redsea pro salt mix
Do water change every month 30g
Phosphate dont measure since i have no visible algae .. any sugestions or ideas
Ca.440 ppm
Kh.8.4
Am.0
Nitrite.0
Nitrates.les than 1ppm (0.50) red sea test
Mg.3600 ppm
Ligjtss .2 hydra 52
Flow . Jebao wp40 and wp25
P sk .reef octopus sro 2000
RO/DI from fountainhead water sistems 5 stage .
Change the sediment every 3 months .and carbon bloks every 7 months .. the only thing i have notise is my di recine has change color just half of it during 1 year of use .. and is a empty gap on the bottom when i turn the filter on about 1 inch ..and the DI recine tumble inside the canister (the DI recine is the one that came original with the filer sistem)
Use redsea pro salt mix
Do water change every month 30g
Phosphate dont measure since i have no visible algae .. any sugestions or ideas