Hi all,
I built a pond in the basement about a month ago. About 700 gallons. I added 27 koi and 50 goldfish. No cycled media was added. Filtration is a 55 gallon drum with an upward flow. The water first goes through a layer of black matala pad then a green matala pad. After that i have about a foot of space for media. I had the pond running with 40 goldfish and no media besides the matala for about 2 months. When i added the koi i went to home depot and got some sponges to put on top of the matala for more bio. The water in the pond became foamy within an hour. I figured that it was the sponges but instead of Taking the sponges out i decided to do a water change. I did 3 80% water changes that day and it cleared up. The next day i did another two and there was no more foam for another 3 weeks. All of the sudden its foamy again. Did another 80% water change. Cleared up. Next day foamy again. Is it the sponges at this point? Wouldnt it have left the system with the original water changes? Or is it the fact that it isnt fully cycled. Thanks in advance.
Few things:
The sponges did not come with any chemicals on them (as far as i can smell)
And when i soaked them in water prior to putting them in the tank no foam or suds came out of them.
Also, the fish dont seem affected at all. All eating even when the pond is covered in foam.
I built a pond in the basement about a month ago. About 700 gallons. I added 27 koi and 50 goldfish. No cycled media was added. Filtration is a 55 gallon drum with an upward flow. The water first goes through a layer of black matala pad then a green matala pad. After that i have about a foot of space for media. I had the pond running with 40 goldfish and no media besides the matala for about 2 months. When i added the koi i went to home depot and got some sponges to put on top of the matala for more bio. The water in the pond became foamy within an hour. I figured that it was the sponges but instead of Taking the sponges out i decided to do a water change. I did 3 80% water changes that day and it cleared up. The next day i did another two and there was no more foam for another 3 weeks. All of the sudden its foamy again. Did another 80% water change. Cleared up. Next day foamy again. Is it the sponges at this point? Wouldnt it have left the system with the original water changes? Or is it the fact that it isnt fully cycled. Thanks in advance.
Few things:
The sponges did not come with any chemicals on them (as far as i can smell)
And when i soaked them in water prior to putting them in the tank no foam or suds came out of them.
Also, the fish dont seem affected at all. All eating even when the pond is covered in foam.
