Hi David Sorry I haven't been in touch. Had a real **** time with the tank over the last two weeks. Went away for a day and whilst I was gone my tank temp dropped from 28 to 21 and everything looked like ****. The Millepora bleaches in a matter of days, lost another acro and now have algae everywhere from a spike. Got some real work cut out for me now to get it back on track. Heater must just have packed in and then the temp just dropped. Massive apologies mate as the Mille is now dead and gone. Going down to the shop today to sort out some bits and bobs to get it back on track. Working away next week and want everything set up and working whilst I'm away. Hope all is well with you.