Help With Stocking Choices

[Dave H]

I would like some 1 to reconmend a hard water fish suitable for a rekord 70,I have a couple of bolivian rams,would anything else be ok

 

[england]

I would like some 1 to reconmend a hard water fish suitable for a rekord 70,I have a couple of bolivian rams,would anything else be ok

whats the meausurments of this recford
im not used to them