Habs all seem to sprout in the same manner. They like a softer soil in my opinion. It's easier for them to dig a stable root structure and break out of the soil.

A possible problem could be that the sandy soil holds less water. It might just take longer for them to sprout because moisture drains out quicker. Some add sand or perlite to potting soil to improve drainage for mature plants. I prefer perlite.

I invested in a bag of "seed starting mix" for $9.99. I have a couple years worth of good medium for germination.

Don't give up on the sandy soil seeds but I don't think it's ideal for germination.

I noticed that they would be bent while coming out of the fertilized soil and then stood straight the same day. Will they do the same thing in the harder and sandy soil? I am keeping it watered regularily and fertilizing with a Water Buffalo excrement and water solution (live in Philippines). Will look for the perlite. Thanks alot.

Don't fertilize them, that is a very bad idea. The seed itself has more than enough food to allow the plant to germinate and it should be fine until it is at least a couple inches tall (I NEVER fertilize seedlings until they are in the ground, or a final pot).

By fertilizing you risk either failed germination or killing the plant, while there are almost no benefits at this stage of growth.

opqdan you plant straight to a final pot?

I go from seed tray, to 8" pot. Then when the time comes, a final transplant to at least a 12". They get ferts in the 8" and can spend a few months there.