Mumma.of.two
Aquarium Advice Obsessed
VictoriaC said:This is what i did first week that i've set up - i bought some bio-things in a bag for another brand of filter and a sponge - and fitted that around charcoal filter that came with aquarium. So is this enough - without charcoal?
Now my other guppy appears to be sick - they both now sit at the bottom of the tank by the air-stone, and the other guppy does not eat. The one that's about to explode - eats well tho ( but spits some of the food)
my water parameters staying the same.
Yes. All you need is mechanical (sponge) to remove particles and biological (bio rings/ceramic rings) for the BB to colonize (they will colonize the sponge too). Charcoal IMO is not needed. It's chemical filtration used to remove meds and smells from the water which a healthy tank doesn't have.
I don't know what else to suggest for the guppies. They all must have had something when you got them. You can try salt baths to see if you can bring down the swelling.