I am in for 1m to 2f but the only issue I have is about a filter. I can do a sponge filter or else a corner box filter but yet again I think in the box filter they could trap in it. Also an internal filter would suck them I think. What do you think about this? If I go for only sponge filter how can I generate more water current?

Sponge filters are pretty much 100% safe with fry, I don't really like corner filters but in my Bree it tanks I have a sponge filter and internal filter pumping 350lph (max flow rate) and all the fry that come out are perfectly fine with the current as far as I can tell. This is a nice inexpensive way to filter smaller tanks.

In my 4ft grow tank I have 2 large sponge filters and a fluval 305 canister filter with a large sponge block over the intake. I put fry in there that are 1cm plus and they seem to deal with the flow and grow up happily.

Hope this helps.

how much litres does the tank with the 350 lph filter has?

the tanks are standard 2ft size with roughly 60L volume. its not fancy but its functional :d

Hey agai,

Now going back to the idea of trios...

If I can work out some tank movements down the track, then its probably possible to house the colony in individual tanks/trios and have my 400l tank As a fry tank.

Now saying this, it brings up a different question of is a tank with dimensions of 136x 55x 50h too big for fry to handle? This idea also sounds good to me as my fry tank is 200l and to double the tank size would be great... I'd be able to house like 1000 fry at a time with good filtration... Perhaps?

Thoughts?

seriously dude, buy my book! it covers all of this stuff!

I had better sell a few fry and purchase your book then hey! Im a bit annoyed
I haven't been able to so far... Cost wise, It's hardly anything in the big picture... I am looking forward to reading it.