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We've got 2 clown loaches 1 siamese flying fox 3 adult mollies 3 black widows 2 danios but the mollies have had babies so we've got another 10 that are now 2cms in length and another 25+ new born So I reckon its well over stocked, I've asked at the LFS but they don't buy fish so I'm going to...

Sorry this is a really dumb question :oops: but how do you calculate how many fish you can have in a tank? I've read its 1cm of fish per 25cm2 of water but I'm struggling to work that out So if my tank measures Depth 28 cm Height 34 cm Width 75 cm ... how many fish? Thanks Paul

whoops sorry :oops:

In July our Molly gave birth for the first time, we managed to get 12 of the babies into a breeding net before the other fish ate them. All survived and we released them into the main tank last week, where they are doing fine. The Molly has now just given birth again, this time we've got...

Thanks for the advice, its what I feared The annoying thing is the filter was part of a combined package ie tank, filter, heater all included, so you would have thought it should be up to the job If I opt for a more powerful filter, how long do I need to run them together until the bacteria...

Thanks, any idea how long they will take to grow to that size?

Got home from work to find 15 little molly babies :D I've got them in a plastic sieve that floats so they can't get out and the bigger fish can't get in, put a bit of plant material in as well I'm a real novice so anything else I need to do? Thanks Paul

Recently I’m finding I have to clean my filter once a week as the sponge gets saturated in brown gunk which then reduces the flow of water from the filter. If I leave it more than a week the fish can be seen at the surface as if gasping for air. The filter is a Rena Internal 70 Gph / 300 l/h...

ok hopefully final question I went to the fish shop and the guy there told me that the carbon needs to be replaced in the filter every few months as it stops absorbing, becomes saturated and then becomes toxic. Is this correct as comments above seem to contradict this advice and I've lost a...

yes fortnight = 2 weeks

It was a Rena package tank, filter, heater etc. Thanks for the advice I'll look at your suggestions I think this is probably the answer Yes I am Yes it really helps, I appreciate your advice. Good luck with the job!!

Can I leave the AC in the filter or does it cause damage if it is not replaced? I did a fishless cycle which lasted 6 weeks (as I didn't know what I was doing :oops: ). The readings were Ammonia 0, Nitrites 0, Nitrates 10-30 then I introduced fish. I did add meds for white spot and gave...

I'm really puzzled now as the tank was fully cycled 4 months ago according to the nitrate/nitrite readings. There is nothing rotting so how can I tell if the bio filter is damaged and what do I need to do? I'm still confused with filters, do they last forever? what bit needs to be replaced...

Ammonia - the fish shop said I didn't really need to test this as Nitrite is more important - bad advice? Nitrite - the test kit is in bands so I haven't got an exact reading but it is between 0.5 - 1.5 mg/l Nitrate - as above between 0 - 10 mg/l

Normally I feed once a day sometimes twice I do fortnightly quarter tank water changes The filter is a Rena Internal 70 Gph / 300 l/h Do I need to add new charcoal to the filter?

I've got a 92 litre tank, cycled 4 months ago, stocked with - 2 clown loaches 3 black widows 3 platies 3 mollies 2 algae eaters I do fortnightly water changes but on testing the water before yesterdays change the nitrite level was very high, almost in the toxic scale. I did a quarter water...

Not sure, is this important for future stocking? None at all, it must have happened overnight when the lights were off. Since then its been fine Thats the conclusion I'm coming too, but its very odd none of the other fish have been affected

My tank has been established for nearly 3 months (after cycling). We had 3 black widows, 3 black tuxedo platies and 5 guppies. Approx 20 days ago we introduced 5 more guppies (bag in the water, lights out etc). After a few days one guppy died and we noticed that most of the guppies had...

Thanks for your help Water parameters are fine Another guppy died yesteday and a couple of the new additions have developed ich which I'm treating with medication and heat Why shoudn't you add that acclimation water to your tank? Paul

Last Sunday we introduced 5 more guppies to our 92 litre tank, it already had 3 black widows, 3 platies and 4 other guppies. The other morning I found one of the older guppies dead with its tail fin really damaged, almost torn off. This morning 4 guppies are showing extensive damage to their...

Bought 6 neon tetras yesterday but after adding them to the tank and a couple of hours later turning the lights back on, noticed that 5 had white spot. I've taken them out of the tank and will be returning them to the store but is the tank now infected? Do I need to take preventative measures...

Yep thats them :oops: They definately have flowy colourful tails so they must be male The previous evening the guppy in question was picking on the platies, so perhaps its been taught a lesson and is now in hiding

Perhaps I've discovered a new species :? Told you I was new at this, they are black widow tetras

I'm new to this fish 'thing' but have to say its a fascinating hobby! ... and onto another question My tank is 92 litres and after 6 weeks fishless cycling has been established for approx 5 weeks with 4 black widow danio's. Water quality is fine. On Sunday we added 3 black tuxedo platies and...

Water is fine, I tested everthing before introducing the new fish I just feel sorry for the platies