Hello TFK.com folks,
I've gone through several of the searches after I purchased a Fluval Edge a couple months back trying to understand how to create a sound environment for the fish as well as what type of fish would make sense to stock it with. For some background, I have no experience w/ aquariums outside of a few goldfish over the years. I decided to purchase this tank for its looks in hopes of filling it w/ a black molly and some other fish for 'good luck'.
Now... On to the issues!
I used the cycle formula that came with the tank and did so before putting any fish in. Once cycled and the test strips looked good I added some fish. Originally I had 6 molly's based on the LFS's recommendation that it could handle that many. I was and still am thinking that was a bad decision since it is a 6 gallon tank and that just seemed like too many fish. In chinese culture (my wife), a molly is a symbol of good luck, but it must be kept in numbers of 1 or 6+. So, it is either 1 or 6. After several of them dying I went back to the store, had them test the water and it was OK. Suggested I add aquarium salt which I did and that did seem to make them a bit more energetic. Since I didnt have 1 or 6 I gave the rest to a friend who has them today.
To re-stock them I decided on guppies and would resolve my molly issue elsewhere in the house in a small 1 fish tank... I went with 5 fancy guppies and have had problems from black eyes to tail rot/nipping to ich. Aquarium salt did seem to help out with some of the issues aside from the nipping but needless to say i ended up losing the fish AGAIN... so now i'm thinking its surface to air exposure causing issues. i plan to get an air rock this weekend to try out. Last rotation of fish was 2 guppies and 2 bumblebee corys based on recommendation that they would mix OK together. I dont think that's correct either since the guppies eat the fish quick, leaving not much for the bumblebee, plus the bumbles seem VERY aggressive and nip the guppies fins.
Recently, I did a cycle in the tank because after losing the Mollys I wanted to start fresh. I've noticed that there is a lot of buildup that is brown and i cant tell if it is bacteria or algea. The tank consists of a fluval heater, the traditional fluval filter running at max capacity for water aggitation, 2 blocks of lava, 1 fake flower and a fake rock (i know i know... i like them). The bacteria/algea seems concentrated where the water comes out of the filter adn by the heater but it is also spreading onto the gravel. Any thoughts here?? I know you want a healthy balance but this seems a bit high unless its because i dont have enough fish in the tank to manage it right now (1 gup 2 bumbles).
NOW, last thing... I'm going to swap the fish out into something that is 1 species, will enjoy the space they have and will survive. All good things I think! Any recommendations to the stocking suggestions, and what can I do to help keep this fish tank going. I dont want to put more fish in until everything is solid. Thanks for taking the time to read this - pics below.
-N Flickr: nelsonbcabral's Photostream