Newbie here... looking for advice to make 8 jet sequencial fountain similar to this project linked below which is 4 jet randomised... tia
Use two of them. 
But seriously, first of all you need to repost all the project details here. It's work to follow links, and most people don't have the time to sit through lengthy videos. Secondly, you didn't explain what exactly your obstacle or problem is.
Some advice - ditch the round PCB. It's more expensive and trickier to lay out.
And what's Your touch to the project?
What needs advice?
Looks like three jets to me.
Get an 8-relay module and an Arduino UNO. Connect the 8 inputs of the relay module to 8 outputs of the Arduino. Set the outputs HIGH and LOW in any sequence you like.
Example:
its an IdeasTV project which i thought might adapt ok...
Any other last minute details that we should know?
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