planning stage

The 1st pond was 15ft x 5ft x 4ft ..I would not build bigger than that today of I was to build another ...I would go to 5ft deep though .. the shelves I just planned in where I wanted the iris and plants etc to sit ...I do have my builds somewhere I will try get them for you .... and yes I just built a breeze block color around the edge and then finished it of with nice coping stones .

 

that sounds about the right size to be honest, i was tempted to go the filter box way at the very beginning but now i will be. I only really want the pond as a nice relaxing feature in the garden

 

Kevin did you cement any of your rocks in place on the waterfall or the coping stones on the edge? As I'm not sure what to do as I hear the cement can leach bad stuff into the water

 

The rocks on the waterfall were that heavy they were placed ...but it was limestone so I saled them 1st ... the coping stone was cemented as was the block wall but that was covered with rubber lining

 

Did you do any footings for the blocks to sit on?

 

Nope ...just cemented them on a shelf ...I would now if doing it again but I had no issues

 

@bigbore , just be aware, 'proper' Koi ponds are quite expensive to build, if you want to do it right. I built one at my last house which measured 13ft x 10ft x 5ft. In the end it cost me maybe £7,000? Of course, that was getting someone in to dig the hole, and some 'finishing', but the filters alone cost me maybe £1,500 (bead filter and sieve). Don't get me wrong, get it right and it's great/a thing of beauty, but just be aware

 

My last pond was 15ft x 15ft and 5ft deep ... it was in 4 inch , 2 inch and 1.5 inch pressure pipe .2 x bottom drains both aerated .. it had 2 sieves a nexus 210 and ultra bead ub60 bead filter . 2 x sequence 18000 external pumps and 55w uv along with 2 air pumps ... I dug the whole and built the filter pit and built the whole pond myself and I cannot even imagine how much it cost ... the sad thing is it was amazing crystal clear water my fish were very big and 3 years after with electric going up and up I had to shut it down as it was just to dear ...especially in the summer