<a href=showthread.php?s=&postid=13113541#post13113541 target=_blank>Originally posted</a> by ricks
Looks like Bryopsis, eradicating it from your system is difficult. As you have found out pulling it doesn't work, and I feel just helps spread the spores. When you try and remove it seems to just grow shorter and the roots dive deeper into the rocks. That being said here we go....
One way to help is raise the magnesium levels to around 1500.
Make sure your have an over powered skimmer.
Add a refugium, with proper lighting.
Make sure you have plenty of flow to suspend detritus.
Install a reactor with rowapos, or a quality GFO.
RO/DI with TDS testing
Rinse all frozen food before feeding, please do not starve your fish.
Add a proper amount of turbo snails, they will not eat the grown algae but will help keep it from spreading.
Change your halide bulbs at 8-10 months, they will shift color spectrum more to red with age and this promotes algae growth.
Finally time, like anything else in this hobby good things take time....
Happy Reefing