Hi

New to fish keeping so I’ve decided to start off with a cold water set up. I’ve got the tank which has a framed base. The problem Im having is that before I started to fill I noticed the base of the tank did not sit flush on the side unit I’m placing it on.

This is not a fish stand but a solid wood side unit. What would be the best way to rectifiy this? At the moment it’s rocking from diagonal corners of the makes sense and prob around 4mm gap.

Thanks for any advice in advance

Sorry for delayed reply.

Welcome to fishkeeping.

A piece of polystyrene and/or an aquarium foam mat that sits under the entirety of the fishtank base ought to help.

On another point, a cold water set-up is not any easier than a temperate/tropical set-up. The latter basically involves a heater, set to the temperature required for your fishes' requirements, and which simply switches on/off automatically to ensure the temperature remains at that required level. This would vastly expand the range of fish available to you to have in your tank.

You can use the ~6-8 week time when doing your fishless cycle (the stage of preparing the filter and specifically its media to be able to cope with processing the fishes' waste when you ultimately get them) to peruse what fish you might ultimately opt for and whether to opt for coldwater fishkeeping or temperate/tropical. If, towards the end of that, you decide to get temperate or tropical fish, you can purchase the heater then.

Hope this is helpful. :)