Constant brown/green algae issues.

[Rpc07]

To start the tank is 1.5 years old, it’s a Reefer 250 (50ish gallons of water volume)

Lighting - Reefbreeder photon v2+ 8 hours max intensity 2 hour ramp up/down. Running about 325 par 8” bellow the water surface

Flow - dual RFG’s on the return line plus dual AI Nero 5 pumps on Random mode 30% - 60%. It creates a nice random flow action in the tank.

Dosing - BRS pharma 2 part and Tropic Marin part c dosed equally. 1ml of acropower daily.

Feeding - auto feeder 2x daily W/ Neptune pellets & 2 cubes/chunk frozen every night.

Refugium lit 12 on/off
Deltec ix600 skimmer
Small amount of carbon monthly
No GFO
Phosphate E for p04 control
10 gallon water changes bi-weekly W/ tropic Marin pro salt

My last parameters as of 2 days ago are :
Alk - 8.8 Salifert
Cal - 490 Salifert
Mag - 1500 Salifert
P04 - .1 Elos high res kit
N03 - 4ppm Salifert & Nyos
Sg 1.025 - Hanna
PH - 8.3 Hanna

These have been my parameters and routine with small ups and downs for easily the last 9-10 months.

On to the issue for the last year I have been getting brown what looks like diatom algae on the sand and this dark green algae that acts exactly like Cyano ( small patches that blow off easy) I can’t for the life of me figure out what’s going on. I see all these tanks with gorgeous white sand and I envy them all.

Here are some pics

Thank you for any help

 

[Coastie Reefer]

First off most tanks don't have pure white sand so don't sweat that! What's you CUC like? Turbo snails would go to work on the rock. For the sand you may not have enough flow lower down in the tank, or you may need a sand sifter or something like a cucumber.

 

[Rpc07]

First off most tanks don't have pure white sand so don't sweat that! What's you CUC like? Turbo snails would go to work on the rock. For the sand you may not have enough flow lower down in the tank, or you may need a sand sifter or something like a cucumber.

Currently just a handful of hermit crabs and trochus snails. For the sand I have a sand sifting star and a few nassarius snails.

 

[Rpc07]

@Randy Holmes-Farley any insight on this?

Any help is truly appreciated

 

[Doctorgori]

that algae looks like the type brisletooth tangs like ... I could be wrong