JBtheExplorer
Native Gardener
So it flows fine when you turn the waterfall down, meaning it's looking for more pressure. But it doesn't instantly slow down when you turn on the waterfall, just gradually. That's a puzzler... where is your pump in relation to your bog? And is the waterfall on the opposite side of the bridge?
Yes, waterfall is right on the other side of the bridge. Pump is on the opposite side of the pond.