This is an old pic. The stock list has changed a lot since then.
My tank is a 110gal. The filtration system is the entire works- 600gph pump, more media then you can shake a stick at, heater, UV lamp, and continuous carbon-filtered tap water drip (20gal/day.) I've been having mild success growing plants in my aquarium and check my water parameters daily with a photspectometer. Ammonia - 0, Nitrates 7ppm, Phosphates .4ppm, Iron (trace mix) .4ppm. In short, water parameters are near perfect. I do not use any salt in my water because of the plants. I do dose Seachem Excel and Florin Axis daily as a carbon supplement, and CSM+B (trace mix) about every other day. Water temp is kept between 78 - 80 degrees F. This tank is about 7 months old, but the entire filtration system and about half the fish stock were transfered from an older smaller aquarium that was several years old.
Stock list:
1 Blue regal cichlid
5 tiger barbs
1 black ghost knife
1 coriadora
1 silver dollar
3 red mollys
3 black mollys
2 sailfin mollys
2 guppys
1 some kinda silver looking catfish. It's small. (not a columbian)
1 small striped thing that looks like a minnow
1 patriot crab.
** 1 large goldfish ** See note at bottom.
I think that's everyone. Hmmm....
My UV bulb burnt out a few weeks ago & I've been lazy about getting it replaced. I plan to do that today though.
I haven't seen all the fish "flashing" yet, but enough to be concerned. I've seen the cichlid do it as well as the striped minnow, and I think the Tiger Barbs, but it might have been a couple of the molly's- I can't remember. So far there are no lesions or any other visible physical signs of illness in the fish.
I however, have been getting a rash on my fingers every time I clean the filter. Wearing rubber gloves seems to help avoid the rash. When I researched the rash I found a form of fish TB bacteria called Mycobacterium marinum seems to fit the description of the rash I've been getting. It's supposed to be very common & can be treated with antibiotics. Not sure what the bacteria do to the fish. Anyone know? Maybe it's the primary suspect.
** About the goldfish... He's been acting very strange lately. He would get spooked at any sudden movements near the tank and would go ram into the side of the tank, sometimes knocking himself unconscious for a few seconds. It was damaging his nose, and he started seeming disoriented & unbalanced. Last night I pulled him from the tank & put him in his own hospital tank with some aquarium salt and Rid-Ich meds. It was subtle but I thought he might have been displaying a little pop-eye but it was hard to tell. The goldfish has not exhibited any signs of "flashing". He's about 3 years old or so.