Seriouly though, I moved the firt ten barrow loads by hand and it was effing hard work. Since I had some chaps putting a conservatory up for me they had the JCB on site. Ten quid in the right hands and Bob's yer uncle!
Does look good though doesnt it.
Going to use sand / underlay / Butyl as a liner then add a large pressure filter. Simple but, hopefully, elegant when done.
I spent the morning concreting in place stones around the berm (the earth work on the RHS of the image) to support it. I also de-flinted all the sides...sharp! Fingers cut to shreds. Ouch!
Next is to and the horizontal surfaces then line the walls. I am thinking of using old blankets for this before laying the butyl - is that a sensible thing to do or should I buy proprietory underlay for some good reason I don;'t yet know??
I may even lay carpet on the very bottom of the deep bit.
That'll keep me busy monday and tuesday I reckon!!!
Any tips on filtering would be appreciated - I'm going for a big pressure filter discharging into a fountain or water fall or something of that ilk for aeration.
Berm!!!!!!!!!!!!!! please!!!!!!!!!!!!!! levee....... or how ever it is spelt, this is an UK board not an American, btw I am taking the mickey.
Re carpet etc I would suggest synthetic and it is probably more rot resistant but I have a word of warning over combination of depth and the contouring, I suspect that with the combination you are going to end up with some significant folds in the liner. Take you time filling the pond and work the folds as it fills, personally I would consider having some temporary water storage facility handy so that if you decide to shift the liner about you dont have to dump the water. The circular paddling pools with inflatable collars sold by the likes of B&Q make good and fairly cheap holding tanks. I took me a week to fiddle with my liner but my shape was worse than yours.
Re underlay, I used sheet polystyrene in my fishpond but that is inside a concrete shell. I used sand on the wildlife pond and the plant pond, it can be used, damp, to line sloping walls but vertical walls would be a bit much. Polystyrene is a BAD idea for floors on which you will want to walk, it crushes under the concentrated load generated by feet and takes a set, sand feels hard when there is a good depth of water above it but it still has some give. If you use sand on floors walk it in bare feet, you'll soon find the sharp points you missed, likewise if you try damp sand on walls use bare hands to pat it into place. If you use carpet make sure it's tack free!
I have cemented the stones into place outside the retaining wall but was unhappy about the integrity of the internal wall, especially when faced with either of my four children standing on it for " a better look at the fish ". So, I dug some of the soil away and lined it with bricks cemented in place. Now to cover with soil again and then smoothg it down.