I have a bunch of 5 and 10 gallon tanks I used to use for a rearing system. There are 3 x 10s with a drilled side (I put them sideways on a shelf so it was the back), 3 x 5s also drilled and 2 x 10s not drilled and 1 x 5 not drilled. If you want them just come pick them up. I had them on a homemade wooden shelf system and used the I drilled tanks for the larvae and when they were big enough transferred them to the drilled tanks plumbed to a sump. Only one hole drilled, the return flowed over the top.
With them laying eggs every 2 weeks you will have a bunch soon!