watering on s/h
 

Hi guys...just transferred some small dendrobiums and neofinetia on s/h...so when will I try and water them again or is it tricky???...Any inputs will do from u guys...thanks!

post some pictures.
if you do not have the water meter...you can always make sure that the level of water is constant and it never goes dry.
dont forget to flush it every 15 days to clean out plant debris and it will also assure you that algae doesnt accumulate

I'd say Bud hit the nail on the head. In addition to what he said, I like to spray the top of the media every so often to get moisture to any roots that are in the 'dry zone' at the top of the pot.

If you just transferred them, they will need to grow new roots that are tailored to the new environment in order to support the plant. Keeping the plants warm, shady, and humid is the best encouragement for them to do that. Plan on the current roots dying and rotting.

Never, and I mean NEVER, just top-up the reservoir, as that is the ideal way to concentrate fertilizer and plant residues in the upper part of the medium.

Always, when you water, fill the pot to the top rapidly and let it drain. That wets the medium, flushes the residues, and refreshes the chemistry of the reservoir.

Watering more frequently is actually better for the plant than watering less so.