I have a tank full of Synodontis Petricola. One of them I noticed today has developed a hole right through it's side (from one side to the other) and there's air bubbles coming out of it, yet it is still eating and swimming as though nothing is wrong! Any ideas? Should I dispatch him now and treat the tank?
Re: I think after nearly a year my Nerites might be breeding!!
If your parameters are right your nerites will lay eggs with a vengeance, but they'll never hatch in a freshwater tank. It's not even as simple as putting your snails into brackish water either, you need to slowly acclimatise your snails over a few days to brackish conditions. After hatching you need to split the adults and the eggs - reducing the salinity of the adult's water, and for the babies raise the salinity more towards a marine environment, then as the snails grow you need to do the reverse and lower the salinity over a few days back to freshwater. It's a bit of a faff!
I know you've decided not to now but just for anyone else viewing this thread - you really want a minimum of 120 litres for a pair of clowns long term. 60 litres would be suitable as a temporary home for the first 6 months or so. 30 litres is nowhere near big enough at all...
Sorry, I know this was posted a while back but better late than never...
It sounds like what you are seeing is sponges of some sort, and 99% of these sponges are very good indeed - the more the better! There is one sponge called elephants ear which can become a problem as it grows very big and smothers corals, but it is maintainable and very attractive too, but you probably won't have it. Do you have any pictures?
You seem to be doing everything right to be honest, just keep at it. The rusty colour sounds like diatoms which occur in newly established tanks. Nothing to worry about really but could do with some pictures to confirm this. Have you changed a large proportion of the water or put in new sand? The high level of nitrate will not be helping with the algae. I'm surprised your cucumber has survived that level of nitrate, but it's all good as your nitrate appears to be dropping nicely.
What corals have you got in the tank? Any pictures?
There's the classifieds section on here - you could post a wanted ad, as with aquarist classifieds. I've got a few spare tanks but I'm a bit far from you to make it worth your while. Just keep your eye out, something will come up! Mike
Re: New to marines, bit of help with the tank please?
As above as long as its across 2 or 3 joists it will be fine. It may shift a little so fill it and leave it a week or two and be prepared to have to empty it again and put shims under one side. I made the mistake of not doing this (I left it 2 days, leveled it then added all of my live rock, put the fish and corals in, hooked up my reactors, then noticed one side had dropped slightly. 2 weeks later it was 5mm lower on one side but it's stopped now. I'm taking a bit of a risk by leaving it like this.