Thanks dogfish, so should i not gravel vac in a heavily planted tank to let the stuff fall to the dirt? But overall I am pretty much decided on black diamond unless someone convinces me of something different, the 20/40 grade should be a little bigger as well so stuff should go through eventually.What ever you decided, understand the finest grains/powder will eventually sink to the bottom. That includes fish waste and little clouds of dirt that may come up during planting.
Uniform grain sand like Black Diamond or PFS will look the same month after month. Const. grade sand like I use will eventually be tiny pebbles on the surface and the fine sand will be in a layer just above the dirt.
I just did the opposite of what devon6209, I just replaced my Black Diamond with Sakerete all purpose cont. sand. The Black sand was too dark with the dark leaved plants I have.
You're over thinking this, pick the color sand you want and go buy a bag. If you really don't like it you can use a syphon hose and suck it right out.
What brand of pea gravel did you use? I was having trouble finding a small grained pea gravel when I was looking for it a couple weeks back.I capped with small grain pea gravel in my large tank. I have a couple bowls I used pool filter sand. My preference is the pea gravel.
I got it at my local fish store. THIS is what i was going to get but they didn't have it in stock at the time. So I went to the small mom and pop store and got basically the same thing but in bit darker color.What brand of pea gravel did you use? I was having trouble finding a small grained pea gravel when I was looking for it a couple weeks back.
Thanks
What I used there were only a few pebbles that were pea size, most were around the size of an apple seed.How small of a grain are you looking for? Pea gravel is PEA sized?
Const. grade sands grains vary from what most people consider sand grain size like salt we use on food to the size of cracked or unground plank pepper.
When you use const. grade sand those fine grains will settle to the bottom of the cap and sit in a layer above the MTS. Your Const. grade sand cap will be very fine pebbles on top.
I've had luck planting DHG in this type substrate as the roots grab that fine layer rather quickly. I also think the weight of the small surface pebbles helps hold the young plants Maybe? a bit better than the uniform small grains of the Black Diamond I've used.