i've started to flush with clearex, should i stop?

Course not!
I'll second that.

I've seen plants flushed for 4-5 weeks, no problem. When they start starving they use up the fan leaves, starting with the oldest and lowest on the plant. Makes for a deceptively smooth smoke. :madnoel:

Never tried Clearex. I've flushed with distilled water with a drop of dishwashing detergent per gallon as a surfactant. Sucks 'em dry! I generally replenish Ca/Mg a bit, though...