I have a small pond which is about one meter in diameter and about 80 cm deep. The only fish are small guppies. Plants include a single night blooming lily and about a 70% cover of Pistia. The pump is rated 700 liters per hour and feeds a 5/8" garden hose which runs about three meters to a fountain which is about 80 cm above the pond surface. The fountain feeds a small but deep stream which runs about three meters into the pond. The stream is full of gavel which has, for the past ten years, served as a decent biofilter.
The pond water is crystal clear. No algae at all. The stream has some algae in shallow areas where the water moves slowly.
My problem is that the hose from the pump to the fountain has begun clogging up. I can clear it by simply disconnecting from the pump and blowing through it (strong lungs) or by using the garden hose. I have collected the debris which comes out. There is nothing but for tiny little particles of algae. After clearing, the fountain runs at full strength for about 12 hours and then begins to slow down. After three days it is at a trickle. The pump itself is free of debris and algae.
Any ideas what could be causing the clogging of the hose?
The pond water is crystal clear. No algae at all. The stream has some algae in shallow areas where the water moves slowly.
My problem is that the hose from the pump to the fountain has begun clogging up. I can clear it by simply disconnecting from the pump and blowing through it (strong lungs) or by using the garden hose. I have collected the debris which comes out. There is nothing but for tiny little particles of algae. After clearing, the fountain runs at full strength for about 12 hours and then begins to slow down. After three days it is at a trickle. The pump itself is free of debris and algae.
Any ideas what could be causing the clogging of the hose?