you could give the sponges a wash if your filter flow-rate has been compromised but you must be VERY careful when washing. Only move it very gently through old tank water to discard the biggest bits of debris, ensuring that your valuable bacterial colonies are left intact.
Eeeeeeeeeeeeeeeek. So a gentle swish, any squeezing permitted? I feel like I need a very detailed set of instructions for this!! I'll wait til the bloom has gone then give it a very tentative go, the thought of having to re-cycle the #41#### tank makes me want to scream.
congrats on your new additions