Are you using Tap water from faucet or RODI water ? If RoDI- are cartridges expired?
is tank at or near a window?
have you changed lighting schedule ?
Tank does Not look terrible, honestly
RO water, carts are changed as recommended and I test for TDS always zero. Under the microscope I have GHA, Diatoms and Dino's.
UV changed last week and 14 months prior, (bulb was very clean) and is set to low flow.
I test every other month with ICP usually in Redfield ratio. When I am out of balance I dose no3 or po4 I also use Moonshiners system.
I think my sand bed is killing me. If you look at this picture we are one week after 10% water change via vacuuming the sand bed. exactly four weeks from change the bed is a matt of algae.
I can tell when the four weeks is up by looking at the bed (1.5" of sand on average)
I blow off the rocks before the change and add internal canister with micron filter and add carbon reactor to sump and run them for two days during my 10% monthly weekend water change. Socks are changed weekly without fail. RS 300 skimmer, Apex, trident Red sea blue bucket matched perfectly to tank for changes.
No window, in man cave. No carbon dosing no aminos. I use Selcon twice a month on the J. Sprung Nori and feed Rods, LRS fresh shrimp clams Ocean nutrition and Hikari pellets.
And tank looks ok but I do struggle and I am trying to level up.
Real issue is the GHA right now likes to grow on certain torches you know the expensive ones and the sand looks nasty after week two.
The RS 90's are 100% blue 60% white ramp up and down two hours each way and 12 hour total duration. lighting not changed in over a year.
ICP parameters or good. The most GHA I ever had was with a fuge with Chaeto when I removed the Chaeto the GHA left with it go figure.
I also dose Biodigest once a week.
I have even dosed Vibrant three times over the last three years (it works for a while with no issues) just not the answer.
Any input would be appreciated by all of us who struggle with nuisance algae.
Thanks
