The average. deviation of the routine axial plane from the anatomic axial plane was 5.0Â° abduction (SD =. 2.3Â°). The simplest correction method reduced the mean discrepancy in the observed TT-TG. distance by 68% and 72% in simulated femoral abduction and adduction, respectively.
The sand used to amend some soil is what's called builders sand...you can find it at Home Depot and Lowes and probably other garden centers. It is coarse grain and will provide good drainage....play sand is very fine grain and will cause more troubles than you had before.
Sand is not always the best substrate to grow plants in, but it is easier then gravel with certain plants. Just make sure they are weighed down enough (fine gravel may not work) and the roots of that particular plant are not delicate.