Ditch that pleco no pleco known to man can live in a 5g, even by itself. Also, invest in some good filter media. Charcoal does minimal work on filtration, so adding something that reduces ammonia, etc. will be more beneficial for your smaller tank.
Ditch that pleco no pleco known to man can live in a 5g, even by itself. Also, invest in some good filter media. Charcoal does minimal work on filtration, so adding something that reduces ammonia, etc. will be more beneficial for your smaller tank.