Wet and dry vac it when its empty?
cheers for the reply but i didnt get the wet part? Vacuuming with what as its quite deep and cant see how vac would work physically
Wet & Dry vac/gutter vac, basically the same thing
Empty your tank of most of the water and then use the vac to clean up all the resin you say is in your tank, just make sure you park on a hill (ish) so the water is going to where your tank lid is as when you drain the tank that's where the resin will be
In regards to whether you'll mess your pumps up tomorrow, do have a pre filter before your pump/s? If so then you'll be fine...
If not then in theory yes you could damage your pump but in practice I doubt it will.
I've had resin in the bottom of my tank for over a year now as I couldn't be bothered to sort it.
Because the resin just sinks to the floor of the tank and the outlet is slightly higher than the floor of the tank, the pumps have never (to my knowledge) ever sucked it up.
Also have pre pump filters/strainers before both pumps though