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hang on overflows aren't "siphon" overflows. They call the U-tube a siphon tube but it's very misleading. I like to refer to it as an equalizer tube. hang ons will also only drain what is returned to the tank, but I agree that if drilling is an option, it is a safer bet but the hangons are used...

I'll help you out if you still need it. I'm preparing to build one for a 55 very soon myself. You gonna use VHO's?

if you keep your prefilters clean, you shouldn't need to. cleaning them will remove the bateria from them, destroying your biofilter. If you feel the need, do no more than half at once. if I were using one, I may consider doing it annually.

YW! I hope I'm not breaking any rules, *********** has some of the best prices next to ---- for magdrives. they are listed under powerheads at *********** because they are internal pumps.

1. Spider reflectors are designed to be mounted perpendicular to the tank 2. I don't know of any way to attach them from the sides unless you use no caps which I would not recommend!! The reflector wraps around 180 deg. you can rotate the bulb so that it directs the light any direction you would...

I've got 4 of them. (2) 214's and (2) 228's, I think those are the model numbers. The larger ones stop about weekly, the smaller ones normally go 1 month before I need to clean them. They aren't too bad if you use the filters and don't mind cleaning them.

do you have a prefilter before the wet/dry? are you keeping it clean? at least weekly?

I always suggest a 15 High over a 10 if space allows. The footprint is the same but you have additional 6" of height. I'm sure condork would be happy to build you one with a 15 just the same, just cost a bit more.

Originally posted by robvia Your watts is set by your bulbs. If you hook a 100W light to a 400W ballast you still get 100W of light. The ballast just needs to be able to run at least the lights you have. It (the ballast) can be bigger, but not smaller. Hooking a 400W light to a 100W ballast...

Originally posted by baddlord77 I have heard it's better to use red led's because the fish and such cannot 'see' red and that because the blue is 'just for looks'...Is this true ? this is true to some extent. However natural moonlight is not red. effect of moonlighting is debateable for...

a wet/dry provides much more surface are for bacteria to grow. Make sure you keep your prefilters clean. I strongly suggest a protein skimmer for no matter what method you choose. FYI, these filters have developed a bad rep for producing nitrates but I think it's undserved, I think the flaw is...

yeah they make legs for them, 6" isn't much, thats only 3" on each side. 30" tanks run 24" all the time, this is diffussed light we're talking about.

It depends on what turnover rate you're looking for. I did (2) 1" drains on my 75. 1" bulkheads require 1-3/4" holes a 1" drain will support about 600GPH you also need some type of weir/overflow. I like to just use PVC 90's. They are small and not as obstructing as a box.

I live by Danner mag drive pumps. for efficient nutrient export you want 3-4x turnover rate. ..and like condork stated, you'll need either an overflow or to drill the tank. the 3-4x turnover rate is hard to achieve with most Hang on overflow boxes because they normally have 1" lines that will...

I might be way out on a limb here but I'm having a thought. :scared: Maybe if you could find some clear plastic sheets that come close the 400-420 range (thats where the 10k spike is), you could layer those between the bulb and water, removing a piece every week or few days? the theory here is...

no, I don't bother because I believe it's always gonna be there anyway. If it's not it can be so easy to add just by placing any new inhabitants in my tank. Ich might not be able to host on corals or inverts, but it sure can be in the water that goes in with them. I try to minimize the amount of...

At this point in time thats the only way you can be sure that the tank is ich free if you believe thats possible. Like Bang already said, it's a topic of much debate and I tend to agree with him that it's always present in my system.

do you have good surface movement or any means of oxygenation? Rapid breathing and shyness are common of lack of oxygen. unlikely any disease thats killing this fast. I 2nd squidd's comment, we need some details on water parameters.

how long have you had the previous lighting? The change in kelvin is going to change the intensity of the light the coral sees as well as wavelengths. You're going up in kelvin which means the intensity is actually going to drop. however, the corals have produced zooxanthellae that would...

You can use ridgid PVC or you can use a flex tubing. SPAflex is a good choice and can be glued to PVC fittings. Try to avoid sharp bends and when using PVC, try to avoid 90s. Also try to avoid clear tubing that will allow algae to grow. I'll suggest a mag5. You could phisically use a mag7 but...