wash your gravel ...
again and again till the water is clear...
the bubble / soap effect might be from the "start right"
and under gravel filter suppose to make it bubble on top...
water murky due to dirt particles or its just murky...
a pic would be great....
or u can go to pets mart and complain ... but expect them to introduce you new stuff to get rid of your problem... hehe
do you understand how an under gravel filter works???
do you know the requirements to keep crabs???
ppl tend to ask u to buy everything... but, it is you who decides whether u need it or not... and if u dont know anything bout what u r getting... do a research and ask in forums...
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