Bought a Superfish Start 50 Tropical Tank - but have not used heater so I can start with cold water fish. Rectangular glass aquarium Internal filter (Aqua Flow 100) 5W LED Light Aqua Start Water Conditioner Bacto Start Filter Starter Love fish air pump
44cm x 28cm x 44cm (LxWxH) - including hood Capacity: 45 litre
Fish = 2 Ryukin, 2 Black moor, 6 tiny Bards
However, 1 black moor, kept lying on the bottom and has now got worse.
I Ryukin goes to the bottom a lot but also swims a lot.
I have use the dip water tester strip
Ammonia - ok
use the 5 in 1 strip for GH, KH, PH, N02 & No3 - again all colours ok
Really not sure where I am going wrong - really am a novice - any help much appreciated?
All bought equipment and fish from the same store.
Been other stores getting conflicting information - constipation, swim bladder, stress or tank too small.
The first thing is that the tank is far too small for 4 fancy goldfish. These fish will grow to 8 inches long and goldfish produce a lot of waste which affects water quality. For the four of them, you're going to need a 300-litre tank with powerful filtration. This article explains about the tank size they need: https://www.fishkeeping.co.uk/articles ... -size-life-expectancy.htm