Sweet Gelato Auto x4 IN LED MyPot

19/03 Empty the bottom tank, renew the solution completely. I'll begin to slowly lower the EC to 1.6 (I'll consider that I'm now at -3 weeks from harvest). I discovered that there is something strange with the light when I did want to take a "night" picture of the plants with flash. I was using a mechanical timer and even during the shut down of the timer, there is a slow amount of current that let the LEDS on with a very low intensity. The switches of the lamp are working well and shuts down the lights totally. I had another timer, digital one (you can set 10 programs, select days of week, etc...) and same result, current leak. I can't explain what's happening. Fortunately it's an auto strain and that would have a very low effect but still they were never totally in darkness. Other concern the big difference of flowering advance between the 4 plants. The first one have already brown pistils, the 2d and 3rd white pistils and have reasonable get volume, the 4th one is at least 2 weeks behind! So, how to manage the harvest in that case? Do I have to cut all of them at the same time because they share the same DWC and roots are interlaced? What would happen if I cut the plant and then let 2 weeks the last one with the roots of harvested, will they rot, can this leads to diseases?