can lah......just whack lah......bo chup lah.....

Sounds more like a marine tank.Hard to reach tank bottom with your hands.Have you tried?
What's the lenght and width?

Anyway,mine is 2 ft deep which is against most peoples advice.Keh kiang actually.
I cant reach the back of the tank bottom.

The recommended height is 1.5ft for goldfish. 2ft maybe still can. You have to note that pressure is based on height of water.

Heehee.... it's used to be a marine tank, but converting soon to goldfish ! want to keep orandas and ryukin leh....

yep, if fill with water, u get ur armpit wet

Hahaha! i want to whack one... but scared wait i lose the nice nice fish i like, so better to ask first b4 whacking.

maybe i go do somthing to the overflow pipe and see what i can modified. i was worried the goldfish cannt tahan the pressure.

Dont worry.
I used to have 3 pcs of Thai Tosai TV (ave grade) measuring abt 2" which I had wanted to give away.No takers,so threw it into my friend's 6 feet deep koi pond.
No problem at all.Stay at pond bottom and come to surface when there's food.

6 ft deep ... gosh ..

how about the development of that TV? did u notice its tail?

Not only the tail,the fish did not grow which is why I discarded them in the first place.
Only improvement in colouration from the bio green pond water.

Anyway,after 3 months,we tranferred the fishes into the filter compartment of the pond.Bad choice.Got sucked by the powerful filters.

Disclaimer:I am not promoting keeping ranchus in deep water.I am saying that even small ranchus will have no problem surviving in deep water.

Helo HB, was thinking of getting orandas and ryukin for this tank... think it's suitable?

Thanks! Cool! Bubble eyes! any idea where have nice bubbles eyes for sale?

I've read in CP's Beginner's Guide to Goldfish Keeping thread that 2 foot depth is fine for goldfish. Yet I just read a thread on arofanatics.com where 10 inches is recommended as the maximum.

Also, a few years ago, the old fellow running the shop where I buy my goldfish said they don't like more than 14 to 18 inches (we were discussing the big 4'x2'x2' display tank he had in his shop and why he was going to take it away). I respect his opinion and experience as he's the probably the only real expert on goldfish I've ever spoken to in person, but I haven't been able to find any scientific information to back it up, either in books or on the internet. In fact, I find many differing opinions about depth!

My question is because my Ryukins are getting large, and I want to give them at least 100 to 130 litres each of water so they keep growing healthily. To do this in the limited space I have, I can't go sideways by getting longer tanks, so I need to go up by getting deeper and higher tanks to give them more water volume. They're currently averaging about 40 litres each in the various smaller tanks they're in now, which is not nearly enough now they're reaching 4 to 5 inches or more in height (belly to back). It's too much work for me just to keep the water quality under control and there's no margin for error if I get lazy about it.

So I'd like to move three ryukins into my 4'x2'x2' tank (400 litres) which is currently a planted tank, to give them 130 litres each. Actually, the exact same size tank as the one the old fellow got rid of for being too deep! So I'm unsure if it's the right thing to do. I assume the pressure would be slightly more than a same-length 4' tank only 19 inches high and 14 inches deep, but would that be enough to make a difference? Does anyone know, or can point me in the right direction to find out? Any help and advice would be greatly appreciated.

For your reference, here is an example of my situation. This is my largest when I first bought it in January this year, and then later this year. Also, a recent video if you're interested. I'd like to watch them grow even more, and not lose them in the process, so 40 litres per fish is not enough. I/they need more water. But how, if it's not a good idea to go deeper? Or is it?