Ammonia Spike!

i had some issues with a crab trying to catch that was bitting on everything in my tank.. so i rinsed some of the rocks in hot water.. not all.. I just did a 10% water change.. couze it was due.. so i guess I will just wait it out..

will 0.50 ammonia kill my clownfish, shrimp and snails?

 

Is this a new cycle? Did you wash ALL of the rock in hot water? If you have a cycled tank with rock and bacteria that has not been killed by the hot water washing, water changes are the way to go. If you washed all of the rock you have effectively killed all of your good bacteria and will have to do a whole new cycle.

 

Doing a water change will not slow the cycle. A water change removes the waste produced by the nitrifying bacteria that are colonizing not enough of the bacteria itself to matter. If you vaccum your sand bed, squeeze sponges, wash rock then you destroy part of your bio filter or colonized bacteria. But removing water does nothing but remove waste.
Hobby grade ammonia kits read both toxic ammonia (NH3) and ammonium ions (NH4) which is less harmful. There is a formula to figuire the levels of toxic ammonia actually in your water. I haven't used it in so long I've lost or deleted it by mistake. I do know that pH and temp. factor in to the equation to figuire the percentage of toxic ammonia and then you divide that decimal number by 100 to get the ppm of total toxic ammonia.

 

IME shrimp, probably. Clownfish, maybe. Snails probably ok.