Firstly, no need to apalagize. I accidentally moved your post over here to the 911 forum. I thought you and another new member were the same person as both your names have "rookie" in it. My mistake.

I'll move it bak over there when I post this reply.
Anyway, The cascade 80 is a good filter, a little on the low side of efficient, but it should suffice for a single small goldfish. As it gets bigger, and it certainly will, you will want a little more filtration added to compensate for the heavy bio-load growing goldfish create.
Off the top, your ammonia is a little high. No so high that it should cause any flashing like this though. All the same, make sure the ammonia does not rise any further than this level. I suspect that either the maracyn 2 cause your bio-fltraton to fail, or you perforomed too thorough a cleaning to the filter recently. Here's a page to help you through tank and filter maintenence:
http://www.kokosgoldfish.invisionzone.com/...showtopic=26495Ok, it is very highly likely that you have a parasite in your fishtank. Is there any chance of you being able to procur a microscope that goes up to 400X magnification? Even a cheapo like my 30 dollar Walmart kiddie special will do. It is rather easy to examine slime smaples and the like under the scope for a definitive diagnosis. I can walk you through everything very easily.....
Are there any ich spots anywhere on your fish?
See any small greenish colored lumps on your fish?
If no is the answer to the two questions above, then I suggest you try the following:
Firstly, increase the salt level of the water to 0.3% as per these instructions:
Raise the salinity to 0.3% (zero point three). This should be done over the course of 36-48 hours. To do this, multiply your tanks total gallons by 2.5.
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Example: 10 gallon tank - 10 (gal) X's 2.5 (tsp) = 25 teaspoons
So, a ten gallon tank needs 25 level teaspoons to reach 0.3%.
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To bring the salinity up over the course of 36-48 hours, the total amount of salt needs to be split into 3 equal amounts and bagged up into 3 separate baggies. Each baggie of salt needs to be added (pre-dissolved in a jug of tankwater) to the tank every 12 hours or so until the last baggie has been added. Once the desired salinity has been reached, you only need to add 2 1/2 level teaspoons to each gallon of water you add to the tank. Thats it, no more. It is important to remember that salt cannot be filtered out nor can it evaporate. So, calculations and meaurements need to be precise. And again, ONLY add salt back to the water you are going to pour into the tank during waterchanges.
If you see improvement within the first 3-4 days, keep the salinity up for at least 3-4 weeks. If you see NO marked improvement within the first 3-4 days, then you should try adding Jungles Parasite Clear to the tank along with keeping the salinity up. You can treat with PC for 5 full days.
Nether salt nor PC will cause your biofilter to fail as I suspect the Maracyn 2 did.
Now, if the above doesn't reap you the desired results, or you would like to skip straight to the chase, I suggest Quick Cure or some other parasite med that contains Malachite Green and Formalin such as Rid-Ich, Rid-Ich plus or similar meds. MG/F is a very effective treatment but should only be used on fish that are still alert. Keep a bucket of dechlorinate water on stnd-by just in case your fish reacts badly to the med. Not that it will happen, its just a precaution that should be taken with all parasite meds. Increase aeration, do not let the tank get any warmer than 80-82 degrees.
Hopefully, the salt alone will do the trick.
Post back soon.
Paul