Not his best photo. I'm sure he is green wennerae. He hasn't gotten any bigger in quite some time.

You're right, I won't be able to target feed. I'm hoping that they will choose to hunt hermit crabs. It is no problem to dump a few hundred hermits in there from time to time. Combined with the existing crab population, that's my feeding plan. To my knowledge, I don't know anyone else who has tried this.

The 400 will be mostly sandy bottom.

The tank temp dropped to 76.5 last night. Looking at the history, the tank temp has been falling slowly ever since I had to shut off the two CL to prevent sand storm a few days ago.

Clearly, my 2 x 250W heaters can't cut it on their own and need the heat from all the pumps and lights in order to keep the temperature up.

Temperature in the fish room this morning was 68 degrees.

This all bodes well for maybe not needing a chiller...

MHs are going on today for 4 hours or so. It will be interesting to see what affect they have on room temperature.

More pics man, lol. Im dying to see the progress on this bad boy.

Love the rockwork and bar rail!! I had the same sort of plan for my next tank! You have executed every detail perfectly, im very impressed!

I think you need to invest in a few more heaters just incase, that big of a tank you don't want to risk anything.

Great work, keep it up.

I just ordered a single 500W Finnex titanium. That will increase my total heater wattage from 500W to 750W.

The good (OK, GREAT) people of JL were able to double-check a water test and they confirmed what I suspected...my ammonia test kit was too old and it simply wasn't working at all. (Thanks!!) I certainly have ammonia present, so my tank cycling is well underway. Yeah!

I did an immediate 40 gallon water change, even though none of the tank's few inhabitants are showing any stress. (Mantis haven't lost their appetite!)

I've also got to find out some way of preventing sand from being sucked up into the CL intakes. It's OK now that everything has settled down, but if any sand gets stirred up, there's nothing preventing it from being sucked into the CL. I've already had one of the 4-ways jam up from getting some sand in it. A 6"L x 4"W x 2"D piece of sponge over the inlet worked well until I just caught one of the sponges before it got completely sucked into the intake. I need some sort of combination of strainer and sponge. Maybe a sponge wrapped around a strainer with zip ties...but I would like something more elegant than that. I've got some new strainers on the way to experiment with.

i have 350gal with 4x250w heaters that work well.Id rather have 1 too many in case 1 fails

If you "T" off the intake of your closed loop then each end of the "T" will have less preasure draw. His will help with the sand issue. It's not pretty but it works. Also I had Paul @ OM mod my drum so that the drum was full width on the edges but in the middle it is about 2mm narrower. this way sand passes freely through the unit. I havn't needed to pull my OM 4-way appart in 8 or 9 months.

J

I had heard that you had some trouble with sand in your four ways...but never heard your solution. Here's a reason to take your 4-way apart...so you can show me a photo! I'm imagining the drum as a concave shape....From the side, it looks like ")("....?

I had been thinking about the "T" on the intakes...That would really increase the amount of plumbing in the tank. If it all can be hidden behind the rocks, it might be OK.

Ya Mine looks like crap but it is nesessary
http://i59.photobucket.com/albums/g2...05-1Medium.jpg

your right the drum looks like ")(" and works really well. What version are you running? I might have a spare

J