I have a newly set-up 22 gallon long and I just realized I have a challenge regarding water changes. If I do any more that a 10% WC then the highest rock I have (and in the future the highest coral) will be exposed to air. I know that some corals can be exposed for short periods of time. When I do a 25% WC it will be exposed for 2-3 minutes. SHould I be concerned about this? There's really no way around it that I can think of.






