I would have done my slopes a bit different to enable me to place the two bottoms drains much further apart. Currently they are very close together, however, you have a fairly steep slope to the middle where both drains are situated, so you will hopefully not have problems.

The pond appears to be a bit shallow but will work quite well.

Keep us posted with further developments.

The pond will be 1.5 m at the shallow end's and 2.3 at the deep end. The
wall's are not finished yet. Ther is about a 20 degree slop on each side to the middle of the pond. It is not to late for changes what do you suggest about the slopes.

Hi David. If it is 2.3 and 1.5, the depth is perfect as far as I am concerned.

You already came this far, and the positioning of the drains in your case is not crucial if you maintain your 20 degree slope. With maybe an inlet/jet far below surface level on both sides(apart from surface inlets), I believe the two drains will be sufficient at the current positions. These inlets can push debris to the bottom drains apart from other advantages of mid-bottom inlets. One towards the left drain and one on the opposite side towards the right drain. It will also create a nice circulation and current for bodyshape.

Is this what you mean about the inlets? At the top of the slop just as it becomes vertical. Below the water. Were should the skimmer be?

I would do it something like this:



Swimmingpool aimflows on the mid bottom inlets towards the bottom. Nice thing about them is you can play around with the direction of the flow. They are very cheap at R 27.00 each.

The skimmer should be on the side where the wind normally blows towards.

Thanks for the drawing. Can you explain how you made the drawing and posted it on the forum? I had the same idea about the skimmer thanks a lot will keep you posted on the progress.

Hi,

Should the water flow not be anticlockwise, as we are in the Southern hemisphere?

Lol, i've never thought of that...

Can someone tell me why salt is added when building a pond?
a. concrete
b. building mix
c. plaster

They say it extends the lifetime of the cement and it also seals of water entering the cement. Even when they build bridges in the sea they mix salt into cement. I mix cement and salt and paint that as last layer on the pond

I will use salt in the plaster mix. what ratio should i use?

Hi,

Ratio: 4:1: 25kg salt

I see that the people on forum say that you must use 25kg salt per 50kg cement. To finish it off, I take a 5L ice-cream container and mix half salt and half cement with water and 'paint' it over the plaster. It gives a crinkle cut finish and then I paint if with black 'waterblok' paint. The small algae love to grow on the slightly uneven surface when your pond starts to settle.

Peter do you dissolve the salt before mixing then add to plaster mix?
Ratio; 4, wheelbarrows sand.
1, bag cement.
1, 25kg salt.