SFSU, I'm sure you have seen the pics of the view (?)- in my renovation thread down under. I'll post a link just now....in case you missed it....LOLsfsuphysics":30fokpxw said:Ack! Now that's a true mermaid shot... with sailors of old seeing the manatee and thinking they were mermaids....
that said not to detract from your tank but it looks like a pretty nice view in the reflection.
Ben":t3pqg925 said:Lol that dude looks like he is going to be stuck in there.
Sea Turtle":2ic96s5j said:bfessler":2ic96s5j said:That's an incredible tank. I've been following the build but this is my first post.
Looking at the returns against the front glass its not clear how much room was left between the return and the glass. Is there enough room to get a mag float through there? It appears from the photos that these returns are visible from the front glass and if so you will want an easy way to clean the algae from between the returns and the glass.
I can't wait to see the completed reef.
Burt
That would be one hell of a mag float. 8O
bfessler":3jfoq6pj said:We had an interesting discussion on flow at the Wasatch Mountain Reef Fest Saturday. Much too much info to post here but to make a long story short it was suggested that creating a laminar flow in one direction through the tank can create a massive amount of flow with relatively small input. They showed video of a 500G tank set up peninsula style and the only pumps for circulation were 2 rows of 4 vortech's, one down the front and back side. The pumps on the front would run for 2+ hours and then they would alternate to the back for 2+ hours. There were several island groupings of rock in the tank and the tank is visible form 3 sides. Powered only by the Vortechs, the flow around the entire tank was at 20 cm per second. Essentially the current created a huge whirlpool or gyro motion to the water column. Flow was equally strong at the opposite side from the vortec's. When the current impacted the rock structures it creates the turbulence in the flow and the overall appearance was not like a whirlpool at all. It took about 15 minutes for the water's gyration to reverse when the pumps alternated.
The whole point of the demonstration was that you don't need big power hungry pumps to create adequate flow even in large systems. A few well placed pumps or power heads and inertia is all that was required.
I'm not sure what it would take to take 1/2 of your returns and point them in one direction and the other half in the opposite direction then alternate between them but it may be worth the effort. You could test it by simply rotating all your returns in one direction and running the pumps for an hour then sprinkle in some food and watch the currents. Just a thought.
sfsuphysics":3kyidqut said:I think I know the tank you're talking about.
I am curious though, how do they get them to only be on for 2 hours, special hardware? Or do they physically turn them off every 2 hours.
sfsuphysics":3jccuo2y said:Ah so the vortechs are turned off completely if it's a Chauvet timer used, wonder what that does to the pumps themselves I know it's not a rapid on/off as some have but still!
I know there have been some mods done to the Vortechs to allow you to remote control them, but that's not an out of the box ability they have. I really wish they sold non-wireless vortechs ($75 cheaper!) and let the aftermarket provide the controlling on them.
sfsuphysics":151zzhrg said:Well I dunno, that one mod that allows you to use an aquasurf to control them didn't seem to need any programming, simply let the module control the 0-10v (or whatever it is) voltage instead of a potentiometer.
sfsuphysics":33vgvr3g said:AS was designed for Tunzes yes, but there was a modification done before/around the time when the wireless module was released, you literally had to hack/wire the controller of the vortech, not sure if you need the original non-wiredless controller though.
Just google: aquasurf vortech