Switched tanks and suddenly Ammonia!!

I switched from a 200 gallon to a 120 gallon so as to control the height out of safety concerns of the glass shattering. All the water, fishes, LR/LS from the original tank has gone into the new one.

However, upon testing I find that suddenly ammonia and nitrite readings have occured. So far, .5 on both counts. Cant understand why that shld be so as nothing new was added. Have restarted the Eheim wet/dry to control these but am baffled and concerned that these may go out of control and kill all my fish!

Any advice appreciated,

Thanks,

This is normal.

Just moving live rock and putting a piece in upside down upsets the balance. There are different concentrations and types of bacteria top and bottom. They need to readjust. Some thins die....ammonia goes up a bit.

I'm no expert. If someone advises different.....take their advice......this is just my understanding and experience.

Add some mangroves. 1 per 10 gallons and you can dump ammonia in

There is a product called Cycle you can get it a the pet store follow the directions and the ammonia will drop with in hours.

Ajay,

You may need to dose your tank with a product called Prime, made by Seachem. It will lock up ammonia so that your livestock will be safe.

You may have this sudden spike if you moved an established sandbed, which would now release some vile stuff. Or it could be sponge die-off that was originally alive in and on the Live Rock. While you had the LR out of the water, during the move, sponges exposed to air would quickly perish.