Ask The Brewmasters

Hello,

So I brewed a Lager and it's very hazy. 1300L batch, brewed with 100% Joe White Pilsner Malt. 

So initially I added 1L of A3 (about 770ppm) , in a keg through the racking arm, and bubbled CO2 for about 20 mins to try and get good mixing. Still hazy so when I transferred to the serving tank I added P19 (at about 35ppm). Same deal, made it in a keg and as it was being transferred into the serving tank I'd pump in a bit every now, through the racking arm, to get good mixing. It's still very hazy. So I thought maybe I ran the lauter a bit too long, last runnings and pH were 1.015 and 5.6. So I decided to re-test the A3 and see what happened.

Anyway I did some re-testing of the biofine A3 additions and they've dropped clear. See photos below, this is after about 20 minutes. PPM additions from left to right 2500ppm, 2000ppm, 5000ppm - which is pretty high?

This is the control, as in it's straight from the serving tank.

We're a new brewery and I've made this once before, at another brewery, as a contract brew and had the exact same issue, but it dropped brite in keg - so my initial thought was just the mixing strategy is not good enough

My main question is should I re-dose with A3 at the higher dosing rates? The tank is at -2 though, do I let it warm up a bit before re-adding?

Also why might it not have worked the first time? Temperature of DAL I mixed the biofine with, mixing, dosing rate?

Many Thanks,
Danny