Its been 2 months since I got this used 30g tank which had been established by the previous owner for more than a year. Came with lots of xenia, few zoas, kenya trees, GSP, and 1 PJ cardinal, hermit crabs, and snails. I added 2 clowns, 1 emerald crab, few more hermit crabs and snails. Tank had floss filter and bioballs which I removed a week ago. Tank looks absolutely fine a week later. Should I continue like this or will this lead to a disaster?