SPS slime during WC is it normal

[zorden]

My sps slim during WC is it stress by the process?

basically my WC is 1) pour water into a bucket and mix the salt in for let say 5 mins then add the solution into the sump (the pump are switched off) and let the water circulate within the sump via skimmer and zeovit reactor for let say 5 mins before i switch on the pump to transfer solution to the main tank

[FuEl]

If you mix and aerate the water for 24 hours before using you will not experience this issue. Newly mixed seawater is not chemically stable and corals like SPS become stressed and react by sliming.

[zorden]

thanks for the reply... btw u mix 24 hrs with power head or just airstone?

[FuEl]

With powerhead until most salts dissolve. Then run an airstone in the mixed water for 24 hours. If you measure the pH of newly mixed seawater it is almost always around 8.9. Levels will drop back to 8.2-8.3 range after aeration.