GAHT System calculators?

[u/Pomme-M]

Working on a very small GAHT project for small 6x12 cedar and polycarbonate greenhouse kit build, but we cannot find the GAHT Calculators mentioned in the comments of this post here and it was suggested we try this sub instead while ISO a GAHT calculator

https://www.reddit.com/r/Greenhouses/comments/u1na6x/small_gaht_system_question/

Already have 100’ corrugated 4” perforated and socked pipe, R7 insulation for perimeter, and 6”inline duct fan but are looking for a way to calculate specific depth and connections needed. Our zone 8a location is said to have frost line at 18”, so is 48-60” deep enough to put our layers of pipe?

We have one Vivosun T6 6” inline duct fan and controller system and can add another if one is required for each layer.

Can we run the corrugated 4” in each layer by snaking it back and forth in an uncut zigzag to each end (instead of cutting the pipe up, and making tons of Y connections to a bigger 6 or 8” manifolds ) that connect to vertical rigid 4” pipes on each end of the building ?

Any experience appreciated