Bloody Gutted, grrrrrrrrrrrrrrr

Well, i'm just going to agree with what everyone else has said and give some advice.

1: Rehome to pleco if you can, it will either die from being stunted or grow to large for the tank, or both. Try a bristlenose pleco, if you really want a pleco at all.

2: Rehome all the mollies and guppies you have left. I didn't, and I paid for it. They will out-breed themselves and all die when the tank crashes. Mollies can become preggo again and again for up to 6 months after they have been removed from all males, they store sperm for a rainy day. So getting a preggo one won't mean you won't get any more mollies.

3: Your tank needed to cycle. When you try again, start with only a few fish. Your tank can't handle such a massive bioload at such a young age. If you can, rehome all the fish ASAP and then start from scratch.

4: Make sure you acclimate the fish properly next time. Use a drip acclimation, which is where you take some airstone tubing and tie it into a knot, then just suck some water down the end and into a bucket with the fish and their old water in it. This will allow them to adapt to the water as the water comes in, and will make it ten times more likely that they will survive.

5: When you decide to start a new tank, or rebuild the older one, try to get a larger size. Plan out everything you get, ask for advice on fish and other fish stuff, and don't think of everything that we say as dissing your or your tank. We here at AC know what we're doing, we've (for the most part) been keeping fish for many years, and are experts. We just want to help you have a healthy tank with healthy fish.

6: Don't ever assume that a tank is healthy just because it looks healthy. The same can be said for fish. They may look healthy, but are really dying from various stuff. Also, fish will adapt to slowly worsening water conditions and look fine, but when you put them in a healthy tank they will die from the sudden change. Even a change to something better can kill them, if it's too sudden.

If you have any questions about how to fix your tank, don't be afraid to ask, and don't be afraid to take advice. It's all meant with the full intent to make your fish happy and to help you.

Good Luck!

~Travis
 
1) Not cycled.
2) Poorly stocked.

Good luck :)

:cheers:
 
Aw. Feelin your pain, it sucks losing a bunch of fish when you think all is okay......only to then learn that things may not have been ok from the start!!

This fishkeeping lark is not easy. For me its not the money, its the guilt of causing suffering to living creatures, but then I'm just a big pansy and a bleeding heart, haha.

Start over, fix your filter, make sure the 90 litre is cycled before you re-stock - and get stocking advice from here, never trust the LFS, even the good ones! After this experience you will probably slow down a bit, take it one step, and one fish, at a time. I know I did. :)

Good luck and keep us posted on your re-build! :)
 
well fishtank is all sorted now and checked the levels of the tank my 90 ltr and ph 6.7 nitrites 0.1mg i dont know what the hardiness of the water is but the tempreture is 2-27Cels and so far no fish died and the fish seem a hell of a lot better, brighter coloured and happy im going in for an operation tomorrow so it will be a while til i sort my tank out again so my partner will b doing it for me :) thanks to all your posts iv learned alot
 
It's probably not so much overstocking (unless that plec is just huge already) as whatever happened with the water change + inconsistency. Any time I stir up the gravel I do water change for a couple days afterwards, since I started doing this fish unhappiness has basically disappeared. Consistency is the key. If you'd done a regular water change and got back on track a bit before doing the gravel you'd probably be fine now, but of course you can't just breed forever indefinitely or eventually things go south.
 
I agree that it isn't the stock causing the problem that is in question. Long term it would become a problem, but this was a sudden large die off...not due to stocking issues. Good luck with your tank! Hope all goes well in the future. All of us who have been doing this any amount of time have had a large die off at one time or another. I'm also sure most of us have overstocked a tank or 2.
 
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