Glad you brought this up Steve, "from the top to keep the tanins and minerals flushed out of the soil". *
I do have that little lingering issue of not having enough guts to do a fizz test on the sand I mixed in with the sphagnum.
I'm thinking the little ones that can get blown away in swirls of water and the VFTs need a combination and everything else gets watered from the top down. *
And, it's tap water for the pebble trays and cat litter boxes from here on out. *
Thanks to all!