i run bare bottom for the aros in the big tank but substrate for the birchir tank, fine black and white river gravel matches the ornates colour
if aros try to take food off the bottom they end up with a mouthful
they are pretty good at seiving it out but i don't want to take a chance
good shot of you holding the tank cricketman
maybe swim bladder problem or intestinal
http://aquarium.ucsd.edu/Education/Lear ... f/body.swf
if swim bladder it can be emptied by inserting a hypodermic needle just below the lateral line and letting the gas out
haven't seen that before, so can;t offer any help sorry
i have emptied a male with dead, decomposing babies before but
the pouch was swollen not up into chest
maybe try the evac technique but tip him updide down to see if it is air higher op
as morcs has said disease in one disease in all of them
also same temp and water parameters in each tank
sump could be plastic bins stacked on top of each other, wet dry arrangement
large pond master pump then pipe out split into four
with ball valve on each line to regulate flow back to tanks
safest way would be to drill overflow in each tank
you may need to empty his pouch of air
i use a darning needle with a blunt end or tweezers with a blunt end
keep the horse under water
holding the horse in one hand with my thumb and index finger either side of his pouch
gently insert the needle or tweezers into the join at the top of the pouch
don't insert too far, gently open the pouch while applying light pressure to squeeze the pouch
you should see air bubbles rise from the opening
let it go and observe how it swims
you may need to repeat procedure
one of the reasons i use a deeper tank is to avoid the males when mating injesting air into the pouch as they hit the surface
also some can trap air when when sitting in an air stone stream
the amount of time you give your new fish to adjust to their new water conditions can be the difference between whitespot or no whiespot
so not necessarily the shops fault
have you checked the fish still instore to see if they have it also?
your horses will do it again
a taller tank will help
it took me 3 goes to start getting some through
good to seen you are keen to try again
perseverance will win the day
some good reading here at seahorse.org
http://www.seahorse.org/library/article ... Farm.shtml