Recirculating Water Farm Buckets

Ok so i saw a post explaining how to do this on Overgrow a while back. My problem is I cant remember how it was done and Overgrow is no more.

Anyone have any experience on how to do this or any links at all?

I have been thinking of how just not sure if i can find the right pump. Anyone know if there is a pump that has like 8 or more tubes used for low flow sucking and a main tube that would drain back in your res.

That way you could just drill holes in the bottom of the bucket and slowly drain the bottom making sure to keep the 'drip ring' on either 24/7 or just during flowering.

I would still like to maintain a pool of water in the bottom of the buckets, just not sure if there is a pump out there that would do this. I have no experience in hydro so I came here to see if anyone knew of a good place to buy pumps.

I also have no experience with Water Farm buckets so i thought I'd see if anyone else here does.

Thanks for any suggestions/help/advice.