About 2 months ago I harvested the flow hive and litres of honey poured out the bottom of the hive. Researching the forums I concluded that the probable cause was that the frames were not fully capped.
Today I was careful. I took off the lid and removed one flow frame and stood it up on a stand. It was fully capped from bottom to top, both sides, for about 1/2 of the way along from the outlet. I inserted the key about 50mm and split the cells. Immediately the honey in the cells leaked through the caps and down the sides of the frame. 20%(?) of the honey was lost. There would be too much for the bees to recover. I tried 50mm more, and and another 50mm - the same leaking.
I tried a flow frame that was still in the hive. Capped top to bottom on the side I could see - did 50mm of splitting again and again honey ran down the side of the frame engulfing bees!
Extremely disappointed. I have had the flow hive for 18 months now. I had a two box (one brood, one honey super) eight frame hive for many years, and added six Flow frames in a Flow super body to the hive. The bees have been very reluctant to store nectar/honey in the flow frames and all this time I have never seen a fully capped side on a flow frame. The bees will fully cap the traditional frames. I have tried the flow super underneath my traditional honey super, or at the top, but the flow frames were always only maximum 70% capped. Btw I requeened about 14 months ago.
Any ideas - because I am about to give up.