Please watch: "One Day Builds : Cheap And Quick Wargaming Table "
https://www.youtube.com/watch?v=4W5I9LN1IAo --~--
a look at how to make acid terrain for 40k/sci-fi games
link to resin: http://www.cfsnet.co.uk/cgi-bin/sh000002.pl?WD=cast%20clear&PN=5kg%2dWater%2dClear%2dCasting%2dResin%2dRCC25_005%2ehtml#SID=245
£1resin: http://www.poundland.co.uk/tommy-walsh-epoxy-resin-glue
how to make ponds: https://www.youtube.com/watch?v=iFsOlC8Qxb0&t=3s