Hello, I am fifteen years old and I am homeschooled, me and my family live in the mountains of colorado in a small ski resort town, we also live on a small farm with goats, ducks, and chickens; I own and care for two crested geckos and a betta fish by myself. For the past year or so I've wanted to get a saltwater tank, I've had a 55 gallon freshwater tank in the past but I didn't know what I was doing, I had found a bunch of information online about the "correct" way to care for a tank. I wanted to give my fish the best life I could so, I started buying chemicals and different equipment that was supposed to make my fishes life better, the fish slowly died and I felt terrible, me and my mom were left pretty trumatized from the experience. I wanted to give them a better life and I failed, we ended up giving the equipment and fish to someone who had worked with fish for a long time a knew what they were doing but, we kept the tank. I know that fish are going to die when you have a tank but I felt so bad and I still feel bad because I didn't know what I was doing I was about 13-14 so I was quite young. I've learned from the 55 gallon tank and I understand you should do your proper research before jumping into something more so then I did then, I believe one of the reasons the tank failed is because of my extreme lack of research. After the 55 gallon tank me and my mom promised we'd never get a fish tank again but, for almost a year I've been fascinated with reef aquariums and the life within them, over that time I've been doing a lot of research on them. I'll get super into it and non-stop do research and then my mom will tell me it's not possible or yells at me and I'll stop for about a month maybe more but, then my will for a saltwater tank will spark up again, I've tried moving on from them but they are so fascinating to me. I am an extremely persistent child (if you couldn't tell) and I can understand how that can be very stressful to my mom especially seeing how I want a saltwater tank and they're not known for being easy to care for. I have two ideas for what I would want to do if I would be able to get a saltwater tank, I do not have a job or money to pay for the tank but right now I am just doing research and I just want my parents approval. I plan to get a job and save up for the tank as I continue to do research and figure out the best setup for me, I wouldn't want to end up getting the tank until next year around winter. Every time I talk about or mention a saltwater tank my mom gets upset and either yells at me or lectures me about why I could never have a saltwater tank. I get very frustrated because my mom is very fixed on this idea of how it would end up which is we'd spend a lot of time and money into the tank and I'll either get tired of caring for it or a bunch of fish will die and she'll be the one caring for it or we'll toss the whole tank and we'll just have wasted a bunch of money on the tank; I can understand why she'd be afraid of this as I've gotten things in the past and she's been left to care for them for example, I got a cat when I was 11 and my parents care for him because he's more so family pet I just call him "mine" we never agreed that I would care for the cat. I have two crested geckos and a betta fish as mentioned before and I've never asked for any help with them I've cared for them and done all the research myself. She's also afraid that once I move out in a few years I'll move some where I can't take the tank and she'll be left caring for it, I don't plan to go anywhere, where I cannot take my animals with me. I've talked to my dad about it and he's a lot more reasonable and understanding than my mom, I've told my dad that I want to pay for everything and I want to care for everything, I just want them to have my back if I need them and to approve me having the tank. I don't know how to make it clear to my mom of my intentions because every time I talk to her she never lets me get more then a few sentences out of my mouth before she interrupts me. My mom also thinks saltwater tanks are bad for the environment, or that since we live in such a high climate that somehow fish can't live up here, It's very frustrating when I've spent so long doing research on this and she hasn't done any research what so ever but assumes it'll go a certain way. Does anyone have any suggestions of how I can try to convince my mom to let me get a saltwater tank?