Builders Expanding Foam

[masticboy]

I found a Black Landscape Expanding Foam that says it is safe for fish and can be used to help divert water flow for waterfalls and ponds.

http/www.expandingfoamkits.co.uk/product_26-1-13_Black-Waterfall-Expanding-Foam.htm

 

[RossC]

and another one end

and the other end

photos wrong way round

Looks brilliant

 

[Thedoctor]

^^ This is what I created in the end. Bought a bag of slate chippings for about £7 and individually hand siliconed them to two plastic sheets before fixing them onto the back of the tank with silicon.

Selling this tank now though as I've upgraded to a 4ft monster!

Googled using expandable foam having forgotten all about this thread.

Back to square one.

 

[PRW1988]

why not use waterfall foam for ponds? I've had one running for 4 years now and the foams yet to cause as issue.