Posted 21 May 2017 - 12:16 PM
I looking to set up a new tank with one black piranha in .
Do I need to have a specific size tank ? What I was hoping to do was have a 270 litre cylinder tank , is this to small for a single black . In my tank I have now I don't use external filter just have regular water changes and hoover gravel 3 times a week so I am very committed.
I just like the look of the column tank and will maintain regular as I no the black will be messy
Thanks for any help
Posted 23 May 2017 - 06:51 AM
Regular water changes will do away with the need for filtration but the disruption to the fish, I feel, will make it jumpy. A 270 litre (rectangular tank) would be okay for a rhom up to around 6 inches but you would need something bigger as it grows. Tank size for rhoms is all about surface area, the cylinder tanks that I have seen have a very small surface, being tall, whereas a conventional tank of that size will have a 4 square foot of surface. Bear this in mind when purchasing the tank Black piranhas sold as juveniles are normally around the 3 inch mark. They will quickly reach 4 inches but don't expect them to grow more than an inch a year after that. So as a juvenile 270 litres will be fine for say 3 years.
Posted 23 May 2017 - 09:40 AM
I have a juwel 450 for my two red belly but unfortunately have not got room for another that's why I was thinking of the column tank
I could get a juwel 300 but the glass is thinner what do you recommend for thickness
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