Tropical Fish Keeping - Aquarium fish care and resources

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JfreeFromCT 06-22-2007 01:36 PM

Growth on LR
I have these green bubble things growing all over my LR. There are a few large size ones (about half an inch) and other spots have large clusters. Here are two pictures. Can anyone tell me what they are?

I apologize in advance if this has been discussed but I had a hard time describing what they are which made searching the forums difficult.

tangy 06-22-2007 01:41 PM

that looks like valonia. they dont pose threats for your water quality or anything but they do reproduce fast. they look good in small bunches but they will quickly overthrow your tank so its best to harvest them manually from time to time.

FaIIanAnJell 06-22-2007 01:53 PM

Yes that is defanetly Valonia also known as Green bubble algae. Easy way to get rid of them is to get an Emerald crab I purchased two and took care of my problem quickly. Reducing tank nutrients does not do the job. Great care should be taken not to break open the bubbles. As the bubbles mature they contain spores, and if broken this can cause them to spread more rapidly.

JfreeFromCT 06-22-2007 02:40 PM

Thanks for your help!

Melissa 06-22-2007 02:52 PM

what are your water parameters? if they are lose enought try and wiggle them off with your finger and remove them. but dont wait till they are mature. i believe the small ones do not contain the spores that spread them. but even if one pops its no different than an emerald crab poping it to eat it. although emeralds help get the ones you can not see.

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