Cool, looks great man, that setup is compact yet purposeful, I like it. May I suggest turning that big empty middle chamber into a refugium like SH did in the back of his nano? If you put a nice single PC or T5 lamp back there you could grow some good chaeto...
Hi i relised somethink on this! the big empty bit is only full of water when you back the water up! then this means the bio balls and inmerdged in water , so not tricklering
few options
1. leave it as it is and get a hob refugium
2. take bio balls out add live rock rubble and use the big bit as refugium
tho also i think thats there as when you power off off the sump pump ithe water backs up there, soo still testing it out!
how good are bio balls??? some people like them some dont?