I have mine doing 8ml, nixed with 200 no water dripping over 12 hours. Great stuff.Started dosing a couple of drops in my skimmer , works a treat this way.
Yeah a lot of people seem to be starting to use lanth. Sounds like as long as you follow the instructions (as you would with a product like Phosphate E), it's both works great and is awesome value.Brightwell Phosphate E 500mls (NOT 250mls) for $36.00 at thereefshop.com.au
I have seen it for $90 for the 500ml one - which is disgusting!! People need to earn a living sure, but...
Alternative is Lantham Chloride (aka concentrated version of "PhsophatE" without the pretty label) from Bunnings - will set you back a whopping $20 for a LITRE!!!
Kind regards,
Brad.