I was thinking maybe i was just misting too much, i think it was for about 10min twice per day, since its coming out of the tap and on mains pressure its pumping out a bit of water. Currently i'm hand misting and its fine, maybe set it up again with a pressure reducer and cut down to 1min twice per day?
the amount of misting required is dependent on the drainage of the tank, the air flow into and out of the tank, any heating, as well as the source of misting.
It is hard to get a guess from people unless they are actually working with the tank in the exact same conditions. If the tank is flooding that is a good indication that you are pumping too much water into the tank but if you split up the misting time to several shorter times a day, then the time required for the system to prime also reduces the total flow into the tanks and may be better suited for your needs (or it could be in total excess).
If you are not using RO or distilled water to mist and then you also have to worry about salt buildup in the water and substrate in the tank as salts are not removed when the water evaporates. This can show up as a whitish crust on high points in the enclosure (much like whitish crust that shows up on the soil or pot of house plants).
It takes some trials to get a misting schedule down to what you need it to do as opposed to being under or overkill.
As a sidenote, you may want to also check the ventilation in the tank, as too little ventilation can be a potential problem.
Ed