Do bottom drains work in every pond?
A Bottom drains are fine if you can control blanket weed, otherwise you’re in for the time of your life. Bottom drains only work in koi ponds where there is no plant debris, no leaf fall – in other words in a covered pond. They are no good where your pond backs on to a field. Do not under-rate which pump you use. Buy one with a third more power (g.p.h) for the summer months, (though you many come unstuck this summer). Just a note – 90% of fiber glass ponds if they leak, it’s at the drain. The same goes for liners. Flanges are not much better. If you want bottom drains with a liner then buy a box weld but a good one. Also, bottom drains need large settling or vortex’s, nothing under 6ft across – smaller ones are a waste of time and money.
