Dear Tom:
You’re very welcome, sir!
Yes, if you have a cycled sponge filter that’s an excellent idea to include it in the Rubbermaid decompression chamber so that it can prevent any ammonia or nitrite spikes while the seahorse is being recompressed and then decompressed again. That should be very helpful, just as you said, sir, because you will not be doing any water changes (which would necessarily change the water level in the homemade "decompression chamber" and should be avoided). Just don’t anchor the sponge filter all the way at the bottom of the Rubbermaid receptacle; rather, keep it within 18 inches of the top for best results.
Good luck resolving the internal GBS, Tom.
Respectfully,
Pete Giwojna
Ocean Rider, Inc. is an Organic Hawaiian-Based Seahorse Aqua-Farm & Aquarium that Follows Strict Good Farming Practices in Raising Seahorses and Other Aquatic Life.
