Hey again, I have currently upgraded tank from a 19 litre to a 65 litre, I have added 5 glowlight tetras from my old tank to the new tank and they have been in the new tank for 5 days , but my old tank does not have a heater because it is in the new tank , so the temperature is slowly falling and is around 20 degrees. In the old tank with no heater are 4 neon tetras . I want to add them to the new tank ASAP really but I know it will stress the filter having 9 tetras in it but if I done 2 10% water changes a week would it be ok and with suitable feeding? Please help I'm really worried about my neons in the unheated tank...
Tank Cycling, Can I Introduce Extra Fish?
- Thread starter Sharpy14
- Start date
Can you not move the filter media (sponges or whatever) from the 19l into the new filter? Then you could add the neons to the new tank without worrying, but you will have to move them; they'll start to get sick with no heat.
No the filter is built in to the old tank and the new tank is undergraavel filtered . I am topping up the old tank with warm water every day or so, but would it not be a good idea to add the neons to the new tank yet even with frequent water chAnges etc ?
I think you should move the neons into the larger tank.
You could still take some sponges out of your old tank and either bury them under some of the gravel for a couple of weeks; or at the very least wash all the gunk out of them into the new tank.
If not, you will be in a fish-in cycle, so you'll have to be doing more than 2 10% a week water changes; I'd do 25/30% daily. Do you have some test kits? You'll need to watch out for ammonia/nitrite spikes.
You could still take some sponges out of your old tank and either bury them under some of the gravel for a couple of weeks; or at the very least wash all the gunk out of them into the new tank.
If not, you will be in a fish-in cycle, so you'll have to be doing more than 2 10% a week water changes; I'd do 25/30% daily. Do you have some test kits? You'll need to watch out for ammonia/nitrite spikes.
ThAnks for that mate, I will move the neons in tomorrow carry out daily water chAnges and will empty the sponge gunk into the new tank, and no I haven't got a test kit is it best I get one aswell ? And are they dear? (thanks again for advice )
You're very welcome 
Test kits would be really useful. Most people recommend the API Freshwater master test kit, which you can pick up on Ebay for about £20; quite dear, I know, but it does last for ages (I've got 4 tanks, and mine's lasted 18 months so far)
Or you could get separate kits for ammonia and nitrite, which are the most poisonous for fish.
If you really can't afford it, you'll probably be ok if you do a good large water change every day. As long as the water is warm and dechlorinated it won't stress your fish.
Test kits would be really useful. Most people recommend the API Freshwater master test kit, which you can pick up on Ebay for about £20; quite dear, I know, but it does last for ages (I've got 4 tanks, and mine's lasted 18 months so far)
Or you could get separate kits for ammonia and nitrite, which are the most poisonous for fish.
If you really can't afford it, you'll probably be ok if you do a good large water change every day. As long as the water is warm and dechlorinated it won't stress your fish.
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