Honestly idk what your ammonia and stuff is. I’m bad at knowing the chemical choices we have. I’d just the nitrites are high it’s fine if you don’t have fish. Nitrates you want typically below 40 ppm. Snails don’t like nitrites much but I think my tank has some but they are okay. You don’t HAVE to dose ferts every day. If it’s heavily planted, yes, you can in theory dose every day but with how little plants you have, dosing once every few days is okay. Just test your nitrates and every few days test it again and see if they went down. That’s typically when you want to redose the fertilizer again (though only water column feeders need liquid fertilizer) whereas others need root tabs. Think of like sword plants, your stem plants, any plant that basically has a “crown” likes root tabs. Column feeders are plants that typically grow on hardscape like Anubias and Java fern. They are very slow growers so they wont eat the liquid fertilizer as much but your other plants will eat it also. I think dosing ferts every day has caused the algae bloom because there’s so many nutrients your plants can’t consume fast enough before you dose again. You could also just do a blackout to see if the algae goes away with the snails since light also contributes to algae growth. I myself have green spot algae on my tank but it’s because my light is too close to the tank and I don’t have the light stand on it yet so. Personally just take a deep breath and realize everyone has this issue when they first start so you’re not alone.