How do i adjust water flow from a drip to a full stream, as in description?

This is done directly at your water spigot or water flow valve (if purchased with the Garden Grid™️). Unlike drip irrigation, the Garden Grid™️ watering system is adaptable to varying water flow, meaning if you want the system to run at a drip you would simply adjust the water flow downward until your liking. If you want a heavier water flow or perhaps want the Garden Grids™️ water streams to reach the center of each square to be watered, you would simply turn the water flow up until your liking.

I have slightly smaller inside dimensions on my 4’x4’ homemade bed 3’10 1/2”. Can I modify these to fit neatly inside this space?

Hi, thanks for checking. All Garden Grids™ are sized to fit the interior dimensions of most garden beds. Our 4x4 Garden Grid™ measures ~44"x44", so your 3'10.5" dimension should be fine!

Can you take any out in the case of having 1 plant in 4 squares? Such as mint, or blueberry bush?

Unfortunately no you can't remove tubes, but the Garden Grid™ won't interfere with your plant's root system since it lay of top of the soil and doesn't need to be removed during cold seasons :) If you want to use 4 squares for one plant, you can plant near the middle of the 4 squares and use the Garden Grid™ normally. The even distribution of water will still seep through the soil and keep the root system of your larger plant from getting thirsty!

Hello! We have 4' by 8'raised beds that are 30 " high. Will we need an accessory piece for the multi garden connection grid manifold to reach top?

Hi thanks for asking. We recommend ordering a manifold that most closely matches your garden bed's height. We make them from 4"/Ground-level to 36" tall and we plan to add more manifold heights to Amazon over time.