greenish slime on top of tank????

i have a 12 gallon nanocube, water changes 10% weekly cleanup crew is 3 trocus snails 3 crabs and 1 other snail unknown name but colorful shell anyways i am do for a water change today and it will get rid of the green slime on top of water i was wondering if anyone knows what it is or how to prevent... light cycle 10 hrs sorry no pics any help will do thanks

 

Did your nano come with a surface skimmer??

 

A water changes is not a cure all with any tank. what are the waters parameters ? Nitrates Phosphates and DKh Caclium and tempatures and age of light bulbs and K value , You use carbon in the system ?

Just relying on water changes to control algae may be just feeding it ? Quality of the freshwater used to mix the salt and not to mention the quality of the salt also all are not equal. I'd get some test kits and fined out what you are dealing with . Water parameters ad quality is where I'd start

 

How does your water move in the tank and how is it filtered? If you're not skimming water off the surface with an overflow type system, this type of slime builds up pretty quick. Stirring the surface with a powerhead or return flow will help prevent this.

just my 2c.

doog

 

JBJ Nano Cube M.S.S. (Modular Surface Skimmer) for 12G & 24G (Saltwater Aquarium Supplies > Aquariums > Nano Cube ) ??

 

Vacuum holds the skimmer to the outlet grill.... Water dumps over the grate and into the outlet....

 

Here's a pic of my old nano cube.. You can see the surface skimmer on the top left... By the intake grill.....

 

i use that in my 24dx also, helps alot more than you'd think

 

Thats for sure.....I never used mine until my friend suggested it. It did make a ton of difference......

 

Very important to get on top of quick. Surface scum not only blocks available light but also reduces gas exchange...always a very critical factor in a Nano. :-/