Hey all,

So I'm having a terrible time with my fish at the moment. They keep dying. What I would like to do is remove them from my AP system, quarantine them in a nice tank and see if they still die randomly. If they do not randomly die in the quarantine tank I think it's safe for me to assume that there is something killing them inside my AP system (perhaps my pink polystyrene lids? Electrical PVC conduit pipe?). Whilst my fish are suffering my plants seem to be doing quite well. So if I remove my fish from the system, I'm under the impression my bacteria cultures that complete the nitrogen cycle will die out and my plants will not have a source of nutrient.

According to Murray Hallam, seaweed extract is a great AP friendly nutrient additive for situations just like this. I'm from Vancouver Island, BC, Canada and I don't have access to Seasol (the brand Hallam suggests) so I'm curious what other AP friendly Seaweed sources might be available to me in my area.

Also any suggestions on lid and support structure alternatives would be great.