Strawberry Cough in bubbleponic SCROG

Final defoliations are taking place throughout this week. It's a constant battle to keep all the bud sites open to the light and air, but I think it's paying off nicely with this full canopy. 12/3 - Full reservoir exchange performed almost exactly two weeks after flipping to 12/12, using same method as before (just more roots in the way now!). Canna Vega nutrients have now been replaced with Canna Flores, and Rhizotonic replaced with Canna Boost Accelerator. I purposely went a bit higher on the EC to see if they can handle it - seems to be going great so far. I'm having to replace around 15L of water in the reservoir every two days by now, but the EC (slowly dropping ~0.1 every other day) and PH (moving from 5.9-6.1 and back again every day) always seem very stable, so I think they can take a little more at juice at this critical time. 13/3 - Last major defoliation completed a few hours before lights off. I'll only be removing the odd leaf here and there as required moving forwards and no more tucking or LST of any kind. I am concerned about the humidity of this grow room during flowering, as it's a fairly well enclosed space and it's too cold to have direct ventilation to the outside right now. Solution: I've purchased a 12L RAM dehumidifier to hopefully bring the humidity down from 60-70-80% to 45% for the remainder of the grow. Should be here later this week.