[MacFan]

>I just recently bought a new 90G DAS tank 36x18X31.
>1. Lights... I saw a 36" 192watts PC light in ebay. It will have a little more than 2watts per gallon.
>Is This enough.

It should be enough on a wattage basis, however, if 31 is the height of the tank, it might not be enough to reach the bottom of the tank at sufficient intensity. For a cool look, you could also consider a 250watt metal halide fixture. I bought fixtures from this place and had good results. You would want smaller ones than I used (400watt), I would recommend this 250watt retrofit kit which will require a bulb (6500 or 10k) and you'll want to build a housing for it. The single point source light of MH creates a cool shimmering effect in the water. As long as you get an electronic balast (as opposed to a magnetic or pulse one) you can run any kind of MH lamp. The most important thing is to never touch the bulb when installing it or servicing the tank as the oil from your hands will cause it to heat unevenly and fail sooner. I built a nice housing for a 150watt one I put over my 60g 24" cube tank. I raised it 3.5" above the tank to reduce the intensity and heat transfer and it's been great. If you come to the next plant meeting, you can see it.

> 2. 30 gallon sump. Needed a pump that will circulate the tank more than 5 times of the water and
> will not heat the water to much.

Quiet1One pumps are well priced and if you absolutely must spend the least, they can be ok. However, I've had them fail in a variety of ways and can't really recommend them anymore. I just replaced my Quiet1One 9000 with a ReeFlo pump that is smaller and significantly quieter, plus it's direct-drive as opposed to magnetic impeller. Granted, it was nearly twice the price, but it's worth it compared to the headaches of the 9000 (doesn't like to restart after power failure for instance.) Get a pump that is rated higher than you need. The GPH rate drops off quickly the higher it has to pump the water, and the more plumbing bends it goes through. The pump I got says you can put a valve on the output line to restrict flow as necessary and it will actually consume less power when restricted in that way!

3. I have a fluval 205 in my old tank and a magnum 350 that not using is this enough for biological media for my new tank? How can I inject that nitrifying bacteria in my new tank and how long will I have to run it?

As long as the pumps are running currently and you keep the media in circulating water until you add it to your running filter in the new tank (assuming the water was dechlorinated), it will bring the bacteria with it. If you allow it to sit in stagnant water for a couple hours, the bacteria will die and create sulphur gas. You might need more filter media, but you can simply mix the new stuff in with the old and it'll be fine. If you bring a large mass of plants over with it, you shouldn't have to worry about nitrate or ammonia spikes, especially if you don't add to the fish load right away.

> 4. 3 holes in the overflow whats the 3rd hole for. they told be for (close system)? I dont
> understand.

All three are inside the overflow? My guess would be that with the water pressure provided by a pump, more water can be pushed through the return pipe than would naturally drain out of the same size pipe by gravity alone. So you would use two as drains and one as the return. This also provides a level of redundancy in case one becomes clogged. I know I have a breeding tank setup next to my 240g tank. I have a 1.5" gravity siphon from the 240 into the 20g tank and a 1" sponge covered pipe goes to a Quiet1One 3000 pump that pumps water back into the big tank. I have to restrict the flow from that pump or it will pump water out faster than it can siphon it in from the big tank even though the siphon pipe is 50% larger.

> 5. Can I put those 2 cannister filters as a return line of my water or just run it in the sump
> and put a pump.

I don't have experience with using a sump, but having used canister filters on an overflow system, I would definitely choose a sump next time. In that case, typically the drain to the sump is gravity fed and it's pumped back to the tank. The drain is inside the overflow so in the event of a power failure, you must make sure that the water that could drain out before it drops below the overflow will fit inside your sump. I wouldn't rely on your canister filter(s) to be that return pump. Invest the money in a real pump. You won't get reliable flow otherwise.

If you have a hole drilled outside the overflow, plumb it as a drain to your sink with a valve. That way you can do water changes by opening the valve for 30min or so, then close it and refill. I have an auto-fill unit on mine so I unplug the auto-fill, open the drain valve for 30min which is the time it tanks to drop to a good level in my tank, then close the valve and plug the auto-fill back in. It handles refilling for me. With another electronic valve, I could fully automate the process, but that's a bit risky. If you don't have a hole outside the overflow, you would benefit from plumbing a drain "T" connection into the pump lines, but you won't be able to drain past the overflow level without a siphon.

I guess it's not an issue for you since you can put it in the sump, but from experience, putting the heater inside the overflow box doesn't work as well as you would think. It works ok, but you have to be super careful that the box never drains fully when the heater is on!

You can see photos of some of my setup on our site. I have more that I still need to document there, but like I said, I'll be hosting the September meeting so if you come, you can see it all in detail. I also have a shop full of tools you're welcome to make use of (at the meeting, or some other evening or weekend.) I'm in downtown Dallas and like to build stuff.

Michael

 

[MacFan]

My plant tanks are all 10k lighting. Some people prefer 6500 but I find 10k to be whiter. Once you go beyond that it gets bluish which detracts from the green plants.

Be sure to compare pricing to this site:
https://diyreef.authsecure.com/shop/product_info.php?cPath=55_64&products_id=421

I've bought lots of stuff on Ebay for my aquariums and more, but it's not always the best deal. This is the site I bought my lighting from and was happy with it, but it's far from the only place. If you can find a fixture that doesn't require any building, you might prefer that. I also like pendants, but I don't have any. I will look into possibly using them for the river tank I want to build some day.

I don't know if they make high-volume submersible pumps. Just check the reviews on whatever you're considering. I ended up going ReeFlo instead of Dolphin based on reviews, though either would probably have been fine. I just can't really recommend Quiet1One pumps anymore. They're only a good deal if you don't have to replace them and I've had to replace several.

Michael

 

[MacFan]

Kelvin ratings aren't a measure of color reproduction. They're a measure of the color of the light, defined by the color a piece of metal is when heated to that temperature. Light, as you know is made up of a range of colors. At varying kelvin values, the intensity level of each color in the spectrum might differ. This Wikipedia page (http://en.wikipedia.org/wiki/Full-spectrum_light) has an animated graph showing the average distribution. As you get into higher kelvin ratings, the lower wavelength colors (blues, etc) become more intense while the higher wavelength colors (red, yellow) become less intense as Niko observed. The chemical makeup of the gases and materials in a bulb will affect the exact distribution for any given bulb, so they will differ from manufacturer to manufacturer. As long as it averages out to 10k or 65k or whatever, it still qualifies for that rating. That's why bulbs often come with a CRI or color rendering index value, a measure of how accurately color is reproduced when lit by that light source. It will also be influenced by the glass (if any) on your fixture, how far your fixture is from the surface of the water, and the depth of the water it must travel through to get to the plant or whatever it is lighting. Light is absorbed and reflected along the way and that will change its qualities somewhat.

Ultimately it comes down to a matter of personal preference. My first tank had a combination of 50k and 65k, I later got a deal on some replacement bulbs that were 88k and liked them, but it's a rating you hardly ever see. So I went to 10k and liked that so that's where I stayed. In the case of bulbs that degrade over time, you will also see the spectrum change, though you won't notice it until you replace the bulbs and see the difference. I just replaced the compact florescent on my 150g and was amazed how dim the old ones had become.

(As an aside, I studied printing in college and because the color of lighting influences our color perception so highly, commercial printing is always viewed under 50K lighting. The customer always sees the proofs and signs off on the job under the same lighting. If they take it outside into sunlight or view it under the lights in their office, it may look different. The only way to get consistency is to use a standard value and 5000 K is what is used there.)

Michael

 

[MacFan]

It would probably be ok. I know the florescent won't penetrate as deep into the tank. But if you wanted to mix color temperatures in lighting, that's how you could do it. Do like a 10k MH and 5k T9's. Or vise versa... if it were me, I'd probably just go with a 250watt MH, but I don't have experience with combination lighting to know the pros and cons of it.

As far as using a canister filter with an overflow, I am doing it on a 72g bowfront I have. It is possible, but it can be tricky. I've never used a sump, I've considered it, but I'm all about plant tanks and it will dissipate CO2 from the water. I've heard of people who create pressurized sumps to cut down on this, but at that point you're basically at a canister filter. With a sump, you're basically using the pump to push water up into the tank. When the water rises above the overflow intake, it runs over the overflow and out through the opening in the bottom. It is good at skimming the surface because of this action. If the water level isn't high enough to flow over, nothing bad happens.

When you use a canister filter, as erock noted, you can't allow it to take in air regularly if you want it to work properly. This means having the water level in the tank high enough that it's always flowing over the edge. Obviously if the water level is high enough, the overflow box will fill with water to the same level. There is nothing wrong with this and it will work just fine, however you lose that skimming action. It is possible to get the skimming action by getting the water to exactly the right level where the overflow box is maybe 50% full and the rate the water is flowing into it matches the rate the pump is pumping water back into the tank. Getting there isn't difficult, it's maintaining it that is difficult. Evaporation will take that level down, overfilling the tank will bring it up too high, floating plant matter may block the intake and let the level drop, etc. If you used an auto-fill system and were willing to accept that it might not skim 100% of the time due to periods where the water level might be too high, it would be fine. Or if you didn't obsess about it skimming as I finally resolved to, and just fill it high enough, then it's fine. It's a convenient place to hide the heater but remember that you need to keep the water covering the heater when the heater is on. When you do water changes, be sure to turn the filter off as once the tank level drops below the overflow the pump will pump the overflow dry. I got one of those remote switches they sell for lamps, it's basically a switch at the end of a cord and at the end is a plug you plug your lamp/filter into and then plug that into the wall. So I can switch off the pump when doing water changes without crawling under the tank to unplug it. Make sure the switch is rated for the power consumption of whatever you plug into it if you choose to go that route.

Michael