I Made the mistake of changing both filter media out at the same time in my tank which sent the biological filter skyrocketing toward disaster. I then had a huge algae spike, tested the water everything seemed fine, but then left for work. With in a matter of hours i got home EVERY fish i had was dead, nem was dying, along with the snails and starfish. I tried to save the nem by getting it out of the water and putting it into new water but just couldnt find water stable enough for the nem. Everything died. I changed out 60% of the water and replaced it, treated it, but i cant seem to stop the algae from comming back. What has been everyones experience with this ? what should i be doing so i can get my tank back up and running to get fish back in it and NOT MAKE THE SAME FILTER MISTAKE I DID THE FIRST TIME!?