I'm on the way of making pond using cement and bricks. Is the materials harmful to goldfish, or any other fish? I think the pond have enough size for my goldfish.
I have 1 male and 1 female Sarasa Comet and 2 female Shunbunkins.
They are currently in a 15 gallon tank, and I can't find a 100 gallon tank around my town area, or local online shop.
+And what kinds of filter can I use for a pond? I have 850 l/hour canister filter, and I think it only suitable for around 20 gallon tank. Other than canister, is there any alternative?
I have 1 male and 1 female Sarasa Comet and 2 female Shunbunkins.
They are currently in a 15 gallon tank, and I can't find a 100 gallon tank around my town area, or local online shop.
+And what kinds of filter can I use for a pond? I have 850 l/hour canister filter, and I think it only suitable for around 20 gallon tank. Other than canister, is there any alternative?
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