Coralline

92 has been setup now for about a year and half. The 1st eight months or so my tank was great thick purple and dark red coralline everyone. But ln the last four months or so it been turning white and dying off so i got hardcore on checking ca ad dkh its been ca from 440 to 480 and dkh between 9 and 11 for the last months but no real change. I am thinking maybe my lights are old my front pc light setup are orginally bulbs so that could be the issue please any help out there my locally lfs wants $150 to come out to my house.... right....

 

Well, lights are definitely old. PC bulbs need to be replaced every 6-9 months.
What is the MG? PO4? Nitrates? All of those greatly effect coralline as well.

 

nitrates are ok.. I am getting a mg test kit today... whats po4???

 

phosphates.


+1 on the lights too

 

Yah I am getting new lights today

 

PO4 at 25 and nitrats at 20ppm doing a 20g water change tonight i hope that will help