280g Inwall

[gregzz4]

Originally Posted by Delphinus

1 cup per week seems to be the magic amount.

Are you going through 24lbs a year ???

[Delphinus]

Hmmmm, no, I don't think so ... Although I guess it is something like 16 though. I buy whatever fits in a 1 gallon container and this seems to be about 7-8 lbs and I have to replace it .. hmmmm I need to take better notes, but I think it's twice a year. Man, now you have me thinking. It definitely hurts the wallet when I need to get more.

[gregzz4]

I wouldn't be able to afford changing mine every week

The HC GFO I just used up came from Chin_Lee's group buy
3lbs gave me 6 cups, so 6 4week uses
In the future I plan on using the BRS calculator's recommended 0.86 cups for my 110g system, so hopefully 10 cups/5lbs will get me a year's use

[Delphinus]

No, I guess you're right. I measured out a cup and it came to about 250grams. So that's the same weight as yours.

However, keep in mind that I'm not changing out the full recommended volume of gfo per week. The RC calculator for example says for my tank volume I should be using about 2.5 cups and changing it out every 4 weeks. Instead I use a smaller volume and change it out every week or two. So it kind of works out the same (not quite, but close-ish). The equivalent in your case assuming a 75g tank volume would be something like 3 tablespoons per week, or 50 grams, I think. I probably have my math all wrong on this but something like that anyhow..

[gregzz4]

Originally Posted by Delphinus

I probably have my math all wrong on this but something like that anyhow..

No, your math is good on my amount needed, but maybe 3.5Tbsp/week
You have me pondering running a half dose bi-weekly. It'll be interesting to see how 110ml tumbles. I suspect it would clump less

Did Kien attempt a FTS ?

[michika]

2014 annual bump.

So what's happening?

[Skimmerking]

Hmmmmmmmmmmmmmmmmmm tony
where are you