I've got a bit of a nitrate problem currently. I did some research and found this:\r\n\r\n\r\nEmergency Nitrate Reduction\r\nIf your water tests above 40ppm you should perform a partial water change. If you remove and refill 50% of the water, you will have reduced the nitrate to 20ppm. Repeat the process at your nitrate levels will drop to around 10ppm. Nitrate levels above 100ppm should be considered an emergency! If the levels test above 100ppm then you should perform a series of major water changes as soon as possible. Reduce the water in your fish tank to 20%, using filtered tap water to refill to 100%. Assuming you began with a nitrate level of 100ppm, it has now been reduced to 20ppm. Remove and refill an additional 75% and you nitrate level will be down to 5ppm, considered good for even coral life. \r\n\r\n\r\n\r\n\r\n\r\nIs a 50% water change too big of a water change? I would think that would start a mini-cycle, putting all the parameters put of whack. Any thoughts?