Welcome to FishLore!* Let's see if all these fine folks here can get you on the right road.* First off, if you don't know about cycling and the basics, please read the articles listed
here.* They will give you insight on what probably happened to your fish.* It sounds like your pet store is only interested in selling you fish, and is not concerned whether you can keep them alive or not, because they get to sell you more fish.* If you water tested out as not perfect, they should not be telling you it's okay to add more fish.* More fish just adds to the water quality getting worse.* This is what I would do to get your tank started:
1.* Get a master test kit from Aquarium Pharmaceuticals.* Make sure you get the one that contains the nitrate test kit, and you will have all the tests you need to get started.* You can get them online for around $15.00, so check around locally and see if you get lucky and catch one on sale.* Normally your lfs (local fish store) will sell them for around $30.00.* PetSmart and Big Al's online are 2 places to order one.
2.* Post your readings here.* We want to know your ph, ammonia, nitrite, and nitrate levels.* This will help us determine where you are in your cycle.* We don't want to know if they are high, we want to know what the number levels are.
3.* Don't change the filter cartridge unless water no longer flows through it.* This is where most of your good bacteria lives, and when you through it away, your ammonia and nitrite levels rise until the bacteria catches up again.* If the filter looks gunky, try rinsing it in some used tank water in a bucket or small pitcher and try to reuse it.* I know your filter directions probably tell you to change the filter often, but don't do it.* I don't change mine but maybe every 6 months when they can't be rinsed anymore.*
4.* Water changes are good.* Keep doing them.* If you just can't seem to get the ammonia levels down, get some amquel plus and add it after your next water change.* This will neutralize the ammonia in your tank so it won't harm your fish.* If you use amquel plus or ammo lock though, if your ammonia test has a card that reads from yellow to orange, you will get a false positive.* You need the ammonia test that reads from yellow to green for an accurate reading when using these products.* The AP master test kit has this ammonia test.* Also, if you are using test strips, they are notorious for giving you bad readings.
Also, tell us what your fish are in your tank.* Some fish produce a lot more waster than others, and your tank may be a bit small for your fish.* Goldfish are very messy fish as an example, and usually require at least 10 gallons of water per goldfish for this reason.* And remember, the smaller the tank, the harder it is to maintain because you have less water to work with.* Your ammonia levels rise much quicker in a 10 gallon than a 100 gallon tank, so you have to watch them more closely.*
You can do this.* Let us help you.* You will love it here!* *
