That sounds fine. Algae is okay unless they start taking over for some reasons like too much nutrients in soil. I like perlite better than sand because they are lighter, easier for the plants' roots to go around.
Carnivorous Plants lover, Mechatronic Systems Engineer BC, Canada
I've never had algae issues with perlite myself - it's going to come from the peat if anything. Rinsing the peat can help reduce that problem though.
As for sand vs perlite, I prefer sand for seeds since I always worry that the large chunks of perlite are going to "beach" seeds and prevent them from germinating. I also find it more difficult to provide a smooth soil surface so seeds don't disappear into little crevices with perlite.
You can't go wrong with 50/50 peat and perlite. The only problem with perlite is it floats and can be a pain in the arse when top watering. But dews are usually in a tray of water so it's not an issue. You should also top dress with some live sphagnum moss, and wild moss will eventually colonize the substrate.
You can fine tune with experience. Sand is heavy. I've never had much success with it, other than using very coarse stuff - almost gravel - for pings.
dvg: Sarra's safe inside
Mar 31, 2019 20:40:58 GMT -5
bonfield: I've decided to finally reveal my best-kept secret for growing healthy Neps: Just spit on them every few days, the enzymes in saliva help them to better absorb the fertilizer I spray them with!
Apr 1, 2019 14:24:31 GMT -5
dvg: Salivating up your drools?
Apr 1, 2019 16:30:07 GMT -5
dvg: Duped again on April Fool's!
Apr 1, 2019 16:30:45 GMT -5