So i have some frog spawn from my pond and i was wondering when they are adults would it be ok to use this?

I was thinking since mine in 4.4 litres and has a crack up the side would i be able to put an empty ice cream tub in for the water and the surrounding be soil with plants? Oh and i would only keep 1 maybe 2 in there and let the rest go. Oh and don't worry i will put easy access in and out of the pool part. Its just because it will be easier to move than my ten gall/ 12 litre
Thanks in advance