Recently got a new 15 gallon tank and just tested after adding zoas and a gsp frag. Noticed they weren’t doing well compared to my 13.5 tank. These are the results. Need help in trying to figure out a solution. Doing a water change now hoping it’ll help. Tank has a filter sock and filter floss in the back of aio. Also has a rock back there for more surface area. the tanks has been up for about 3 months and don’t think the previous owner did any water changes. Need advice. Thanks! Btw blue is phosphates and pink is nitrates.