.....day 3, I have had amazing help and advise from Aquarium Gardens, they have been totally fantastic in getting to this point. I still have much to learn and unlearn from my marine years, but so far I am happy with how it's all looking. Finally, with expert help, I seem to have a good spectrum with my hydra 52's.Very happy I stuck with them now. Early days but big water changes daily, plenty of co2 and carbon dosing I hope my set up will thrive. So, looking forward to adding livestock, but I'm in no hurry. Sump includes plastic scouring pads, floss and pond filter plastic tube things, and a bag of Purigen. Return pump providing adequate flow on its own. Massive thanks to Geoff and Steve at Aquarium Gardens for their continued support.