I went with another HAGEN, which was recommended by the lps. They did say they'd had a few of the other models returned by other people. I might go and get a new one and replace the HAGEN then if they're not recommended.

Thanks all.

PS - shrimp all ok, and the remaining 3 rasbora seem to be doing ok now.

Shrimp are cherry reds and are all fairing well - they don't seem to have noticed the temp drop at all.

One of the fish is really struggling now. The temperature is ok, but I'm sorry to say the damage seems to have been done.

I feel terrible - I've put a fair bit of effort in so far, the fish were a bit of an impulse, but you were all right about the size of the fluval. All good until something goes wrong eh!

This is the 3rd heater I've had problems with; first 2 times though the heating was ok, the thermostat broke, making it too warm. Hagen brand I think (fool me twice, shame on me!)

Yes, spares are the next purchase me thinks!!

No, 23L - it's a Fluval Edge nano tank.

Ok, I can try and keep the tank warm until tomorrow and I can try and get a new heater.

Any tips of giving the survivors the best chance? They do all seem in a bad way.

HELP!

I've got back from a weekend away & discovered the heater must have broken, the temperature was down to 10oC (rather than 27oC) - 2 of the 6 fish are dead, the rest are bobbing about, not doing very well at all.

They're dwarf rasbora in a 23L tank.

In a panic to save the remaining struggling fish I've done partial water changes with warm water and managed to bring it back up (which I also read may have been a mistake!!).

What can I do to ensure the struggling fish have the best chance? Is it too late for them?

a few months now. They had shed the odd leaf in the past, but been ok for over a couple of months.

I left one in there, it is growing back now.

Ha, I asked the question, and got a response already:

"This fish bowl isn't meant to be used with a filter. It's pretty small for that...
You can actually use it as a wall mounted flowerpot as well."

...do I follow that up??

This is bad. I've reported it, but not sure what will happen.

http://cgi.ebay.co.uk/New-Wall-Mount- ... ain_0&hash=item2eb1172e71

I should ask the seller a question; "where does the filter go?"

tut tut

Oh hi Suey2, no they got binned, with some force too (chucked to the bottom of the wheely bin!)

I did leave one little crypt in the tank, as it only had a few leaves, they've all melted, but guess what - it's growing back nicely now.

Stupid plants!

I've still got a java fern and java moss, which has exploded and a load of moss balls bobbing about. It looks a bit bare so I might have a look at the LFS this weekend and see if there is a delecate little plant I can use in my nano tank.

Thanks both for your help!

Hmm the water board do admit to use various different water sources around my area (West Yorks), from resevoirs, rivers and the like, so the sources can change and the water parameters with it.

It was just so strange that literally all the plants went at the same time, directly after that 5% water change.

Thanks for your advice on that, much appreciated.

I need to find another plant type then...stupid plants, and they were just out of Warranty too!

Right, all crypts removed. Couldn't avoid making a bit of a mess.

All the roots seemed to be in quite strong. I've left one small plant in, just to see what happens (if it grows back)

Readings:
pH7.6 (no change)
KH 2 (previously 3-4)
GH 4 (previously 6)

So there is a slight drop in readings. Does this put the fish in any danger? Anything I can do to prevent any further damage?

Also - I'd not have noticed if the crypts hadn't melted. Are they a good plant to keep in the tank from that perspective (i.e. a canary in the mine role - they melt when there's a problem)

...I think that's 3 questions....

Thanks