I need a favor for those of you who have the original water pump on their Grobo. I had to swap out my original water pump due to failure. I noticed that a lot of water and possibly nutrients are on the underneath of the lid of the water tank. My pump is variable so I can turn it down. What I would like to do is see if I can get it down to the point of the original pump.
Could some of you take a short video of the tank with your pump on? Could you also show me the underside of the lid?