When i put my ear monitors on i only hear on one side i bought a nother pair of ears but now when i sing the music in my ear cuts out?

Without hearing it it is difficult to be sure what is going on. What happens if you plug the main PA into the monitor channels, do you get the same? Are you trying to get too much into the monitors? static and popping are not the same to my ears, popping sounds more like you are hearing something that's there through the monitors that you're not hearing through the main mix as it may be masked. What frequency is the popping? Does it only happen when levels are high or when the singers are doing 'p' and 'b's etc? do you get it if you put the monitors on the main mix? Are you running the monitors into clipping (although I wouldn't expect this to create a popping? It sounds like a mix issue rather than a fault with hardware.

85 decibels is the generally accepted limit for 8 hours of exposure per day (you have to give your ears time to rest in between).
At 91 decibels you have about 2 hours before suffering damage.
At 100 decibels, it's about 15 minutes of safe time, and immediate damage (no safe duration) can occur at around 140 decibels (about as loud as a jet engine or firecracker).

The important thing to note about volume and ear safety is that you have to rest your ears (i.e. nothing too much louder than a conversation) for the rest of the day to avoid risking damage. That means that after 2 hours at 91 decibels, you need to rest your ears for 22 hours before these guidelines can apply again.

Many bands play shows at around 100 decibels, so invest in some HearOs or other decent protection.

Put it in MONO mode.
You can also make a cable where the TIP and RING are wired together....

See if there is one published in the giant catalog at a music store with a good inventory of sheet music.

Otherwise have someone with a talented ear transope the music to paper for you.

I know the Tan Guy Uekele band did an acapella version of it, if you have a good ear for it, you might not need the sheet music.

by in ear monitor I assume you are talking about a set of stereo headphones.
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These would plug into the PHONES jack, which is located just to the left of the MAIN OUT jacks.
If your headphones have a 1/8 inch jack, you will require a 1/8 inch female to 1/4 inch male stereo adapter.
These are fairly common, and can usually be purchased at any audio store or Radio Shack or The Source by Circuit City.

Are you using a STEREO input cable? Is the source of the audio stereo? The stereo cable will have three connections on the plug... the sleeve, the ring and the tip.

If you only have mono source or using a mono cable you will only get sound in the left headset. Pulling the plug part way out will sometimes contact both connection so you will hear both.

If your source is mon, you will need a special cable that connects the mono signal to both sides of the input plug, that is the ring AND the tip.

Well, you aren't going to like this... You have a system that can deliver 250 Watts maximum RMS BECAUSE that is ALL the input power there is from the power cord. All these numbers like 800 watts a side are BS... those are PEAK power and not sustained power... More basically fake advertising that we are so accustomed to lately. The good thing is you won't blow your speakers.

The clipping is the internal protection that limits the amp from saturating.

I know you aren't going to like to hear this after spending that much... If you want more power you will need to buy another amp to get the higher sound level and use this as a mixer... One side of this should be able to drive 125 watts which SHOULD be enough to use for monitors. You should procure a sound level meter and make sure you are staying within the sound level guidelines now to protect your hearing... I know of several musicians that now are near deaf due to exposure to high sound levels...

DO NOT connect your in-ear monitors to the power amp out using the MAIN/Mon speaker option as it would be goodbye hearing and fried ear buds..
Get a very small and in-expensive headphone amp and connect its input to the 1/4 inch Monitor output jack.

You will need at least a 24 channel mixer to give you spare channels. You also need an active crossover and a snake. The advice you need is too much to include here so I am including some links:http://mixonline.com/live/FixIts/, http://en.wikipedia.org/wiki/Live_sound_mixing, http://mixinglivesound.com/blog/tag/outdoor-concerts/,http://mixinglivesound.com/blog/, and http://www.scribd.com/doc/11435651/Beginners-Guide-to-Mixing-Sound. You may need more monitors than you are planning on and you might consider in ear monitoring.

A certain amount of "hiss" is present in electronic amps due to the statistical noise in electronics.

The hiss should be WELL below the level you get when playing. If you put you ear to the speaker, expect to hear some hiss with nothing plugged in. Ten feet away it should be very faint.