I put some algaefix or sumthin in my tank last night not a lot just to help with algae bloom... and 2 of my carpintis died and the other 2 are swimming around in quick circles sumtimes upside down when they move.. 3 of my FH died but the others are fine... i did water changes to rid some of the chemical. what else should i do? like epsom salt? as im writing this my carpitins just swam up and hit to light hard now hes upside down i think its done... should i just cull?