Well i had to change the gravel today to sand for my new cory cats. I put all my fish in a separate tank for now. I took half the water out and took out the gravel. Then i rinsed the sand in a bucket. I thought i cleaned it well but apparently not. The sand made my tank extremely cloudy! So i dumped all the water, cleaned the sand well this time and replaced everything back to normal. So basically i did a 100% water change which was not intended to do at all..i didny clean my filter so im hoping the bacteria is still plenty in there. But what do i do with my fish! Im scared the tank is gonna cycle again and cause ammonia spikes. I have 4 zebra danios, 2 cories and a betta. I feel so guilty 
Is it safe to put the fish back in?
I will definitely test water parametets but should i just put the fish back in?
Is it safe to put the fish back in?
I will definitely test water parametets but should i just put the fish back in?