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- Jun 13, 2021
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Hi looking for a bit of reassurance.i have a pond approx 2000 gallons and was running geat.unfortunately a few weeks ago I had a peice of slate fall into the pond and damage the lining resulting in the water level continually falling so decided to replace the lining a few weeks ago.i bought a steel framed pool to house the fish and filled with pond water and also used existing filter system.i have since replaced lining filled with tap water and left for a week before adding the fish and the remaining pond water,approx 1000 gallons.i am now experiencing a large amount pond foam and looks like ice over the pond.do you think this is due to the bio filter being interrupted and will this improve in time.testing shows no ammonia but a small amount of nitrite.the fish seem okay.i have never added any chemicals and don't really want to.any advice greatly appreciated