Please Help Me With Sand Fall

[macman60]

Hi I've built a sand fall like the one shown somewhere here. Theres a piece of plexi for the back and a tube connected to the back of the plexi with a air line going into the tube with sand in it on the front. I have a angled piece of plexi at the top about a 1" down and a v-shape near the bottom. The holes are under the top angled shelf and above the V at the bottom. A piece of Styrofoam is at the bottom with river rocks siliconed to it. Also, I have marble chips silicone to the front onto the painted plexi. The sand is a bottle of fine sand from hobby lobby. Is this too thin? Maybe as the sand shoots out the top hole with a sandy fog not stream running down the front. I've changed pumps and also used a valve to adjust the air flow. Any help would be greatly appreciated as I've worked on this fall for 2 to 3 weeks and its still just a project not finished.

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[emerald76]

Hi, your post is very hard to read, could you put in some punctuation? Your sand fall sounds really neat. I believe Jetajockey has a sand fall if you want to contact them.