/an/ tourist here. I'm wanting to make an automated valve for my aquarium's CO2 system. The valve is used to release the CO2 in the air at night so that the CO2 isn't getting into the water while the plants are not photosynthesizing, causing the PH to raise. Right now I have a valve that I manually open and close, but sometimes I get home late and can't turn it off in time.



I found this one on Walmart, but it's nearly 20 bucks, is there an easy way to make something similar for less money?



https://www.walmart.com/ip/Solenoid-Valve-for-Aquarium-CO2-System-Regulator-DC-Output-6mm-Tube-or-Bubble-Counter-Double-Head-Noiseless-Low-Version/257951648?wmlspartner=wlpa&amp;selectedSellerId=101043433&amp;adid=22222222227257951648_101043433_141989961998_18286110951&amp;wl0=&amp;wl1=g&amp;wl2=c&amp;wl3=620766111987&amp;wl4=aud-430887228898:pla-1742198100639&amp;wl5=9027194&amp;wl6=&amp;wl7=&amp;wl8=&amp;wl9=pla&amp;wl10=280608572&amp;wl11=online&amp;wl12=257951648_101043433&amp;veh=sem&amp;gclid=CjwKCAjwxr2iBhBJEiwAdXECw7ehiwMVIIhsSVColJaAweA8j-S6IF8TuUbcwD_AF04YHrLsHZTI5RoCHj0QAvD_BwE&amp;gclsrc=aw.ds

BRO just spend the 20$

Knew a guy like OP. Would spend months building garbage projects of shit that he could buy in better quality for a few bucks and he would get hung up on every little autistic detail. I admire ingenuity but quit being such a cheap fuckin bastard and value your time a bit more. 



Shane, I give 2 shits about the home theater amp you built for your shitty satellite speakers. My $200 Samsung setup sounds great and only wasted an hour of my life.

and learn how to url. that link gave my browser cancer



https://www.walmart.com/ip/Solenoid-Valve-for-Aquarium-CO2-System-Regulator-DC-Output-6mm-Tube-or-Bubble-Counter-Double-Head-Noiseless-Low-Version/257951648

>>2608561 (OP)

Led grow light so they always photosynthesize.

Most plants won’t grow properly if you light them 24/7



>>2608561 (OP)

I’ve did this once for a different purpose (watering plants). A 12V relay with a small servo that pinched/buckled a tube. But afaik those CO2 aquarium supplies are pressurised and you need an airtight seal or it will just leak all the time.



Guess for $20 it isn’t really worth to diy this. Chinese clones of pneumatic valves should be cheaper than that though, €10 where I live

>>2608561 (OP)

>but it's nearly 20 bucks

If you value your time, spend the $20.
