Hi everyone hopefully someone can offer assistance, i have used my brewzilla 3.1.1 many times using also the immersion chiller and whirlpool arm with no problems with pump flow. I also must say that i have always just put hop additions straight into wort. Recently i purchased a keg land Counterflow chiller and this is were my problem starts following my usual hop additions being straight into wort, i have found in the two brews using the chiller that i have no flow from pump. it is not the fact that pump is blocked but the bottom plate of the brewzilled is blocked stopping flow to pump inlet. the instructions with chiller is that to flow wort through it 10min before the end of boil to sanitise it but this where the problem lies as there is no whirlpool and thus no clearing i.e centercone and all the crap is covering the plate. should i create whirlpool first before the sanitising waiting till boil over and using still hot wort to sanitise or should i be using some hop socks in the hop additions. hope all this makes sense.