[teamdulski]

The manager didn't give me an exact time but from the sounds of it, it had to be at least 6 months if not a year. The zoo now buys a few different products in bulk from her apparently but the Lanthanum is used in almost all if not all of their displays involving water.

She also asked if I needed a phosphate test and I said if she had one that actually worked I'd be impressed. She offered a free phosphate test with the kit she was showing me and since I was at work, I'd figure I'd bring a sample from our look down which would have the least measurable phosphates, brought the sample back....150-200ppb.

So I figured I'd pick up the kit (certainly pricey at $11.50 for 10 tests) since she'd been so helpful. Tested Friday night at 200-250ppb. Currently 100ppb.

I got a 25 micron sock and will see if diluting it yields any different results. Red slime still a factor on the sand bed but not as bad. LPS polyp extension is certainly enhanced.