Little bugs?

hard to tell without pics. Since it's a 10gallon tank a tank swap maybe be the best bet, thats what I would do. Keep up the water changes, if your not swapping a tank do a 50%or more then continue with your 25%. I would not add more to your stock if you parents cannot do water changes for you.

I have no idea without a better description but how about a copepod such as daphina?

http://www.youtube.com/watch?v=hCOK07UwOiY&feature=related

well , little critters that live in moss balls are not parasites.
they prob won't have any affect on the fish in the tank. more likely will be food if the fish find them.

if you have issues in the tank it's not the little critters in the moss ball.

test your water for NH3/NH4 No2 and No3..

Here's a snip from my blog about Critters we find in our tanks and ponds.

This is just a quick blog to be a permanent home to all the links I have to some good sites that already cover this topic very well.


http://www.caudata.org/cc/articles/Tank_critters.shtml


http://www.caudata.org/cc/articles/Tank_critters2.shtml


http://microscopy-uk.org.uk/index.html?http://microscopy-uk.org.uk/pond/index.html


http://www3.sympatico.ca/drosera1/fish/worms.htm


http://www.fishpondinfo.com/animals/micro.htm


Here's a new link I just got from the AquariaCentral.com forums. It even has lots of pictures. (Thanks jpappy789)
http://www.aquaticquotient.com/forum/showthread.php/34333-Bugs-you-might-encounter-in-your-aquarium


Here's another new link from an AC thread... (Thanks Phosaurus)
http://www.plantedtank.net/forums/shrimp-other-invertebrates/40061-whats-bug-how-recognize-them.html


These next three very good resources are no longer found with a *normal* internet search as the websites have closed down for various reasons... most likely due to the world economy. Fortunately, the Internet Archive Wayback Machine saves/archives copies of almost all websites so you can still see the original content of the sites. They may take a little longer to fully load on your computer, especially sites with lots of pictures. See my blog about the Internet Archives Wayback Machine by clicking the link under "Labels" on the right.


http://web.archive.org/web/20070202015209/http://members.aol.com/larval1/critters.htm


http://web.archive.org/web/20070523055718/http://www.menunkatuck.org/pages/micro.htm


http://web.archive.org/web/20060716164019/http://www.menunkatuck.org/pages/micro2.htm


Now, while many of the above critters are visible to the naked eye, many others will only be visible using a microscope. Here's a simple and concise article on "Selection and Use of a Microscope for Aquarists by Bob Blaho" - http://www.aquarticles.com/articles/management/Blaho_Microscope_for_Aquarists.html

I'd guess Cyclops