Hi there guys from over here in the UK. Always browsed this site but never joined,so here i am. Been keeping marines for about 3 yrs now 3x2x2 tank,Eheim 3000 return pump,Vortech MP-20,Koralia 4000 powerhead,Tetratec 300watt heater,TC-10 temp controller (controls heating and cooling),SWC 160...