The other night my halides turned off and my atenic bulbs were still on. Firends came over 1 hour later who wanted to see the tank so I turned the halides back on. That's when I notices a floating red ball that looks like a sack filled with hundreds of small miny red balls. This floating red ball was no more then 1/2" in diameter. After looking at it for a couple of minutes the skin layer broke on the ball and hundreds of these little red things swam away and/or was pushed away by the current. Has anyone ever seen this? Is this something I should be concerned about? Can someone explain to me what's going on?