Air stone bubble wall wand purchase advice

[Marble128]

I need advice on a good air bubble wall wand to purchase. I bought a cheap 10" air stone bubble wand from Petsmart to get started and love the small bubbles. Also I love the wall of bubbles along the back of the tank. Unfortunately after two months it was covered with algae and i was not able to clean it, so I tossed it out.

I replaced it with a Marineland Color Changing LED Bubble Wand 20" (I don't use the LED lights), but only 2/3 of the wand is creating bubbles and the plastic elbow that is connected to the bubble wand is not tight, releasing large bubbles. Also it is a wide wand so it takes up a nice chunk of the back of the tank.

I am looking for something:

-that will last me a while
-I can clean easily
-that is 20 inches long to create air bubbles along my plants

I have a 20 gallon freshwater tank with fish and plants. Thoughts?

Thanks in advance

 

[Delapool]

Generally I've found them much of the same. They eventually block up although seem to last better buried.