I just noticed I forgot to plug my return pump back in since Sunday night. Its Tuesday morning. The lights and power heads have been working but no heat has been getting into display tank. No fish only coral. Temp was 61?. I plugged it back in. Corals are all stressed. No polyp extension on sps. Only half the zoas are opening. What should I do? I was thinking water change in case the coral expelled something during stress or would water change stress them out more?