Might not be quite a zen-ish as yours but I am thinking islands. Have a slightly different vision in mind but we'll see if I can translate concept into reality, I'm not very artistic.

A horseshoe crab?! Wow. I always thought they were something of a no-no but now that I think of it, I have no idea why. Maybe for fear they'll knock things over? I don't really know much about their captive care.

Ever thought about tiger tail cukes? I had some for a while but it occurs to me it's been a lonnggg time since I seen any, maybe they kicked off some time ago and I just never noticed. They did a pretty good job of pooping out clean sand though.

That's not a bad idea ... hmmmm. Tomorrow!

Maybe your RO/DI is 100gpd membrane? Or you have higher inlet pressure? You're right, with a TDS of zero .., just run with it and be happy. :) I'm getting zero right now but it's all new prefilters and new DI. The RO is outputting steady at around 7. Not the best membrane I ever owned, the one before this one had a much better rejection rate or whatever the term is, it was almost always zero except for the first half hour or so. My DI lasted much longer on that membrane .. until the membrane went that is.

ok, if your doing island or bommies then go for the sand.

I am using the aragamax select. its not too big and not too small.

the horseshoe crab do get large, 24in large, but i think that it will take sometime to get that big, I have had him since the start of the tank and i barely see him. I wish for one of those donkey cucumbers, i think he would do a great job. Didnt see any around though for along time.

I use the Dow Filmtec 75 gpd. And yeah used to get me 0 - 1 TDS out of the membrane only but these days 5-6 for 5g fills...can drop lower if I'm running it longer.

Wow have I missed alot lately ! Its really great to see how much you have accomplished. Everything is looking awesome. I remember that skimmer of Johnathon's, she is a beast but worked well. Have you seen or heard from him lately ? On the sand topic I'm glad you decided to add some. With a large tank I think it looks so much better and allows you to go with a much more open arrangement (like Johns). Keep up the good work.

Looks great Tony, I really admire your attention to detail!

If it is a good and properly labled membrain ie. a Dow filmtec TW30-1812-75 it is 75GPD @ 50 PSI. at 90 PSI it should give you about 130 GPD. the max operating PSI is 300PSI on the dows and I think you can get about 170GPD out of that one @ 100 PSI

these numbers are for 75 degree water temp, so you won't get that much as I doubt your tap water is 75 degrees. for example the 75gpd membrain only puts out 50gpd at 60 degree water.

Steve

It's Alive, It is ALIVE!!!

Yipeee, glad to see things moving along now...

I've got lots of cukes because the donkey dungs seem to be able to reproduce in my system. Sadly, I'm too far away to help you.

:sad: