Yeah,when you first start a tank, make sure to just have the tank set up with your decorations (except perhaps plants, I forgot if those go in right away or you wait a week or two. I put mine in my freshwater right away though, and they did fine. :3) Then after maybe a week of running while the nitrogen cycle sets up, or if you don't mind sacrifices, right away, put in some real hardy cheap fish (like zebra fish for tropical freshwater; goldfish works... a little too well, as theyre horribly messy and will flood your tank with crap, causing blooms and the like before the bacteria has established itself to break it down) After a couple weeks of that, check the PH and make sure everythings set, and you should be good to go to start adding fish a few at a time.
I was impatient, and added mine after a week, but I had a fairly large tank and mostly tougher fish, so excluding the ever so picky neon tetras (raaaage; the orange tetras or whatever they're called are MUCH hardier, even if not as cool ;They all took it quite well.
Oh, and apple snails are the devil. (petsmart has some called mystery snails... they're apple snails I think, but don't breed as bad as normal apple snails) If you don't mind an army of snails (like 100+), then they will happily keep your tank quite clean of algea, but they tend to take over. I had a blue mystery snail, but after a couple weeks started finding shitloads of little brown snails, leading to the next problem. ISOLATE NEW FISH/PLANTS/ETC.) Watch for diseases, hitchhikers, and the like before releasing them into your main tank. Just get a cheapy tank for this purpose, great for if you need to treat a sick fish as well, but helps to stop this from happening in the first place. Don't be like me and put new plants in right away, where they promply infest your tank with baby snails. -_-;
On the bright side, those snails weren't too annoying and left the plants alone, they just tended to crunch whenever I moved or cleaned something, being a nuisance. But the last thing you want is unwelcome guests.
Oh, and angelfish, even the dwarfs, can be quite feisty and mean little buggers if they don't get enough space like mine didn't. I had a blue gourami named (baron) vladamir, and a baby angelfish named jessica since the baron was always harrassing jessica at first. Then jessica grew bigger than him and declared all out vendetta against poor baron and did her darnest to kill him, though he managed to survive, thanks to hiding spaces. She also loved nipping at my rainbowfish's tail, though aurora always seemed to know when jessica was about to attack, and she never managed to grab it. Interestingly, no one ever bothered the tetras or other baby fish, and only jessica was stupid enough to bug my massive (nearly 8 inches, smilodon grew faaaast) algea eater. And she promply regreted it when he went absolutely berserk till she ran away, but then went on doing his thing and was never bothered again.
So yeah, don't overstock or fish will get angry with each other, as well as pushing the tanks limits. And live plants are beautiful, but you WILL have to trim them, especially the freshwater ones. Like at least once a week-two weeks, or they will quickly take over. It is sorta fun though.
Wish I had the money to continue it, but after a year I lost my job and couldn't pay for food even, and couldnt find another.After two months and somehow all the fish but a few neon tetras were still alive, I got a petsmart to adopt them and put them in their own fishtank in the employee breakroom lol. Smilodon got to be the king of a display tank too, since their last monster algae eater got sold and they were missing one.
I wanna try saltwater, but that requires a steady job. ;;
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