Rolo - Freaky - I'm the guy your buying the bulb from!
Anyway I purchased it at World of Fish
in Richfield/Bloomington. Right by the Airport/Mall of America - about 1/2 from my house.
They have a great tank with this stuff in it. Actually 2 tanks. Ones a 12 gallon nano I think. Rolo check out World of Fish if you have not - I'd say the best in our area other then Terra Quatics.
Okay here is the deal. With a normal gravel tank and the exact same setup and C02 I was getting about KH 3, GH 6. Before CO2 the water is around KH 4-5, GH about 7 and pH around maybe 7.5. MPLS water is pretty soft.
Anyway the website and packaging says it will buffer your water to maintain a stable ph of 6.5 to 7.0 How they know my water will maintain at that level I don't know. Considering they have no idea what I am starting with. What if I had liquid cement for water? Can't imagine the buffer in the Flora Base could do it. I dunno. I just got an email back from them today to give this rep a call. So I'll do that tomorrow.
So Rolo I guess the answer to your question is the stuff did bring my pH down from around 7.5 to 6.4-6.5. The CO2 helped some but before this substrate it only got the pH down to maybe 6.7-6.8.
One thing that did bug me from the start was how light this stuff was. Almost impossible to get stem plants to stay in. Last night I tossed in some more polysperma and it seems to have gotten a little denser and made it easier to get the polysperma in and stay planted.
They also say no need to fertilize for at least 6 months. Interesting. So I won't fert for the time being. I'll do a NO3 and PO4 test tonight and see where they are.
The other thing on the bag was something like replacing it within a year. Yah whatever! I'll ask about that tomorrow also when I talk to this guy. Better not need to replace it within a year. $90 every year. I don't think so.
Thanks for the compliments on the plants. Worth a shot trying it.