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· Planted Tanker
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You should be able to run 2 bps fairly consistent using a 2 bottle system, changing 1 bottle per week.

Couple things that stood out to me:

"Drop checker in 2 liter soda bottle"

I dont understand this, how is a drop checker inside a 2 liter bottle?

mixed tepid/warm water with sugar + dechlorinator 3/4 the way up to the bottle

Skip the dechlor, dont need it

add 1/4 - 1/2 tsp active bread yeast (refrigerated) into shot glass with sugared water from bottle, mix until foamy

Mix until foamy? Just need to gently stir the yeast in then let it sit for a few minutes until it begins to foam.

add to bottle and shake

No need to shake, just pour the yeast water on top and leave it be.

1/2 tsp is good for 2 liters of water and 2 cups of sugar. More yeast = more co2 but the mixture wont last as long. Day in day out consistency is the goal. Be sure to use the same amount of yeast each time.

Should be able to get 1bps consistently out of each bottle for about 2 weeks. Change out 1 bottle per week, never both at the same time. It's a good idea to have a bubble counter so you can keep an eye on the system's output. As soon as you notice any reduction it's time to change out the oldest bottle. Ideally just prior to it slowing down.

To get more longevity use less yeast. May have to play with the recipe a few times to get it right. Consistency is key. For example 1 bps for two weeks straight is better than 2 bps for a few days, then 1, then back up to 2, etc

Ive never used a cut off valve with DIY, it's just one more thing to go wrong/leak/ depressurize the system, etc. DIY should be kept as simple, and stable as possible. Running 24/7 is fine.

Speaking of leaks, check every connection thoroughly with soapy water or toy bubble solution. When you are satisfied there are no leaks anywhere....check them all again, and again a few days later. The tiniest leak anywhere throws the whole system out of whack.

Here is the DIY set ups Ive done in the past, may get some additional food for thought
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