I've had green water, it's not that hard to deal with. You've probably got a ton of PO4 and NO3 in your water. If you've got these tests, do them and let us know. If not, you should have a NO3 kit anyway, so pick that one up, you don't *need* PO4 if you're not planning on dosing PO4. If you're not dosing, then NO3 and PO4 will be high or low together, having more or less the same source in fish food.
Cut back your feeding, wayyyy back. For right now, feed only once every second day. Do a 50% water change today and another tomorrow. You'll have it licked by the end of the week.
I'm sure that Algone does exactly what it promises, except that it's basically just treating the secondary cause, it's not getting to the root of the problem, so if it does work for you, you'll find yourself spending tons of $$ to replace insert after insert. Besides, whatever's bad for algae is usually bad for plants.
