I do 50+% water changes with no ill effects.
Answer this question. Which is more stressful on corals?
1) Being packed into a small bag and shipped by air 13+ hours from SE Asia to YVR, then go through customs, the wholesaler & into the retailer's tank, all in roughly one day?
2) OR, being taken out of your tank, and placed back in within a couple of hours with all new clean water at the correct temp, pH & salinity.
As you stated, most of your corals are of the reasonably hardy variety. SPS I would worry about. The stuff you have should be ok as long as your new water parameters are good.
We all take corals out of one tank & into another all the time (that's what happens everytime we buy or trade for a coral). Its not like the corals are going from good water to bad water, but the opposite. The new water should be better than what they were living in before.
JMO & JME,
Anthony
__________________
If you see it, can take care of it, better get it or put it on hold. Otherwise, it'll be gone & you'll regret it!
|