Red to brown on sand

[jellyfish101]

Please help before I throw the towel in Red stuff on my sand getting worse day by day no matter how many water changes or how how many times I suck the sand out
Ph 8.2
Salinity 1,025
Nitrite 0
Nitrate 0-.09
Mag 1350
Ammonia 0
Phosphate 0
Kh 8
Calcium 480-520

 

[Dan_P]

Please help before I throw the towel in Red stuff on my sand getting worse day by day no matter how many water changes or how how many times I suck the sand out
Ph 8.2
Salinity 1,025
Nitrite 0
Nitrate 0-.09
Mag 1350
Ammonia 0
Phosphate 0
Kh 8
Calcium 480-520

A photo under white light will help in identifying the troublesome organism.

 

[Fish Fan]

Agreed, a clear pic or two would go a long way here How long has the tank been running?

Red on the sand specifically sounds like cyanobacteria, which thrives on excess organics in your tank.

However, nitrate and phosphate at zero are a red flag, you don't want either of those to be zero, which often times invites dinoflagellate algae.

You may have a combination of cyano and dinos as well.