If you fill up the tank then u can use filters, but for me i just simply change the water when it gets dirty since it's just half tank and my aquarium is not big. Also to reduce the possibility of the water getting dirty, don't put in too much food when feeding.

Ic, i was thinking wat about a bigger tank like say 3 or 4 feet, with bog wood, rocks and so on, how isit possible to keep it clean without having to change water everyday..

it would be fun to set up a really large place for the lobsters to live and breed maybe, yet keeping the water clean and visible..

if the tank's big and filled with many things...very likely it's gonna get dirty. lol. use a filter system then. Of course if the water level is high (tank setups look nicer when it's filled with water.. ), you need a pump too.

Yah, a large tank needs a filter and an air pump. Coz my crayfish were fine until my filter died... then all my crayfish died... coz they go pollute the water with their uneaten food... well, they are very hardy to keep, easy lah, I think it's good to change the water every few days if there is no filter... well, still experiementing on what's the best way to keep them in.

i just realise my tank also get dirty very easily after i put in the driftwood. My tank only 1ft...water gets yellowish.

yellowish water is the driftwood effect loh.... heheheh.... but you no need to worry coz I think yellowish water is normal when you got driftwood and crayfish likes it.

driftwood doesnt kill crayfish as far as i'm concerned. crayfish are the hardiest types of shrimps available. other shrimps are very sensitive to dirty water.

today i realise there are algae growing on my driftwood. haha...will that be an issue?

my crayfish, dr zoidberg (blue) and fry (red).

nice pictures. crayfishes seem to be more popular nowadays and it's getting cheaper and cheaper. Althought all those are just rather common blue/red ones.

The common blue and read ones easy to breed... also it is widely available as food in other countries. Well, still make great pets to see and keep.

does that mean that other colours are difficult to breed? haha, sad, my pets are all edible.

no, all are easy breeders and can have any type of water condition to breed, as long as not too soft or hard.

You are right....

I just think the blue and red people breed more coz easier to get stock... Oh well, I'll never know till i meet a supplier heheheh...

yup easier to get stock. Until now i havent seen a single purple or orange crayfish around.

Can I keep a crayfish with my two crabs?
The crabs are in a 2 1/2 feet tank, half filled with water, has a driftwood and a lava rock, and an air-driven sponge filter.

This post has been edited by xecton: Sep 16 2006, 09:57 AM

crayfishes are territorial creatures...i wouldn't mix them with crabs if i were you. If fishes can la coz fishes are fast and they can swim around the tank. Crabs on the other hand are just like the crayfish and they're smaller, making them easier targets. I'm not sure on their compatibility but to be on the safe side i suggest you dont mix them.

Har? mix crayfish with crab? Die loh.... crayfish will tear the crab to pieces and eat it.

yups, crustaceans are primitive animals, they won't learn to get along with each other hehehe...

They both have pincers, why cannot fight evenly?