[Tomjim]

I have just put in a new slatted tank and it is now due to be back filled. However there is a hole in the tank where the builder I assume bolted the pan together.

There are a number of these throughout the tank but only one which he must have forgot to fill. There appears to be a plastic cap on the outside, of the ones he filled not sure what is on the inside.

Anyone know what these holes are filled with and where I can get a cap for the outside.

Problem is the builder is gone on holidays and I can't contact him.

[bob charles]

back fill away, they are plugged from inside and then a little mortar put on top

[Tomjim]

thanks but I can put my finger in to hole and I am not coming against any concrete

[cjmc]

prob a divvy hole . as said above backfill away and get the builber to plug it when he comes back . or mix a bit of mortar

[case956tom]

we used to use a rubber plug its a sort of bullet shaped with a domed point they can be hard enough to fit without damaging them they shouldnt be hard to get anyone who was using the larger shuttering should have them or know where to get them.