I found a thread by Randy on reef chemistry on silicate dosing. He recommended sodium silicate solution cat. # NC o882 from the science company. That thread has allot of good info, the solution & dosing rate was the two biggies.
My spider sponge has developed some spots where the orange is loosing its color. The frag of it I put in my sps tank in bright light is doing great so I think I will put the mother colony in the sps tank tomorrow. I fear the loss of color means it's unhappy/dying, think the polyps are overtaking the sponge or there isn't enough light for it in the nps tank. Any opinions on this??