Sound good mate that's just about what I do.I'm gonna give mine a mini flush next week the ec on the run off is a bit high so think they need it.
watever happened to keeping it simple, ec metres, ph metres blah blah blah,, good luck
cheers 2 timer them was taken before they started pk,, theyve really packed it on now, i just cant get em out me room easilly so they is ther fro the duarion like, lol, one PE looks fucking huge but its right at the far end so havent even inspected it for 3 weeks same as 2 physco to far away and they stink so bad im not happy with vaing more than 2 outa the room so i can get in to water