Why does the sand have algae?

Yes, as Vicki Sue Robinson said:

"Turn the sand around!
(Love to hear percussion!)
Turn it upside down!
Turn it up! Turn it up! Turn it up! Turn it up!"

I often drag the edge of a credit card over the surface-- 'cause I never disturb my substrate...

(back-up group sings: "Never disturb my substrate!
Never disturb my substrate!")

Also, nothing eliminates algae from the gravel better than a layer of dried leaves as leaf litter lying over it.
 
Originally posted by wetmanNY
Yes, as Vicki Sue Robinson said:

"Turn the sand around!
(Love to hear percussion!)
Turn it upside down!
....Also, nothing eliminates algae from the gravel better than a layer of dried leaves as leaf litter lying over it.
Leaf litter over it?? Dry? I did miss something. Can you please elaborate?

Vicki -disco- Sue Robinson??
No. Don't elaborate, please..
 
NJ Devils Fan, I hope it's not Blue-Green algae you have...
 
Well, somewhere said that it is cause by bad lighting. think it might be one of the bulbs I have in the front of the tank because it is 18.000K. So, I got the original bulb that was in there when I got the tank, which is 9,325K. I did keep the other 2 6500K bulbs in. Looking at it closer, it looks just green. I moved some of the sand around a bit.
 
Bellbottom pants, nehru jackets and disco: three things they'll never bring back!

Eh? What? They aren't! Get back! They couldn't be! Oh, they are...

Dead dried beech leaves litter the gravel in a couple of my tanks. I really like it. But I like "golden" peatwater too...

Rolling that gravel over lightly is a fine countermove. You got more K-rating than you can use there! Keep the "daylight" hours to ten or fewer. Otocinclus catfish graze algae off gravel as well as off glass or leaves...
 
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