@ Manc. Mine is an EKO 50 . Paid less than 200 euros in Bricko Mart . When it was new , it brought the ppm on the tap down from 850 + to 18 ppm. Lasted over a year . Just bought replacement filters , ( 40 euros ), but can't get it under 38 - 40 ppm , but I can live with that , no prob. @ 79 That sounds like a good idea. How much A+B would you give them without mag , cal and the rhizo ? Still around the 600 mark or less ? Anyway , last night I decided not to feed them , but let them dry out a little more than usual , and this morning they are praying . That tells me they don't like daily feeds at this stage , even with as little as they are getting . Gonna give half of them a good feed w/runoff and see what happens . There seem to be two different opinions on this , water to runoff and leave them to dry out for a couple of days , or just a little feed daily . Any more info. on this please . Well, time for a spliff before mixing , lol Thanks to Manc. and 79 for the input . Fingers crossed .