Lighting for 7gal bowfront
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Old 06-28-2003, 12:06 AM   #1
geekgirl
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I want to up the lighting on my 7 gal (all-glass). Right now there is the 14w strip light it came with. I want to try and get 20 watts or so over this tank. As it stands, the tank gets about 2 hours of early morning sunlight too. If I can get the light up to 3wpg or so, I will start using CO2 on it also. I have this crazy idea of entering it in the AGA contest. Competition is less fierce in the very small tank category, and it's a really pretty set-up.

Are there any kits out there for this size? BTW it's a 15" bulb.

there are several anubias, some crypts (two kinds) and java fern in the tank, so the lower light is adequate, but doesn't really grow it well, plus I'd really like to be able to grow a "carpet" of some sort in the foreground.

Ideas?

Stacey
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Old 06-28-2003, 03:04 AM   #2
brandon429
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I like your ambitions for the tiny tank.

Of course all aquarium advise is best taken after a fourth and fifth opinion, but for my two cents heres what I say gives the best shot for an amano-class nano. PS, this is a mini book I just felt like writing today.

First of all the lighting:

I say literally put as much power compact lighting as you can fit and afford into the lid. If you will use one of the bulbs as a reef-ready combo bulb (where one-half of it is actinic, they arent that expensive for a 13-28 watter) you will love the lighting effect and the lower blue end is enhancing to your overall spectral quality. It'll make your greens electric.

Try www.hellolights.com for their combinations. Use three or four 28watt pc bulbs and fan the canopy somehow. You will like having more light than less, as your carpet growers need to stay compact in that small of a tank lest they grow tall and skinny. <----- he said lest.

CO2 injection would work well on that system. One bubble per second fed into the venturi input of a small powerhead is plenty. Ideally, time it so the cycle goes off at night. pH shift is notable if you are using relatively soft water (which for longevity you should be). Out of all the dosings available, I say add magnesium, iron and potassium. Use of a wide-spectrum supplement (I use Kent liquid fertilizer in my nanos) is okay if you are stocking lightly and feeding fish lightly. Don't overcrowd the water from week to week with dosings, fish bioload and food to them does 90% of the work when combined with bright lighting, IMO 20 watts is half what you need.

If you can find some of Amano's powersand off the net, or marine biosand for planted tanks, then you will be better off as these carry heavier organic loading which means you can fertilize less and change water often (this prevents any algae wars in your 7g) without disrupting plant nutrient uptake. Don't think that your plants have to get their fertilizer chiefly form the water column, in nature these are very diluted and much of the plant feeding is done through symbiotic relationships in the soil and its decaying matter (detritus-dirt). this is why in a clean Asian water way where you would find Echinodorus Tellenus (Sword plant) growing wild, you would not see tiny patches of beard algae growing on it unless the waterway was unnaturally rich (as in near a sewage runoff). We get beard algae in planted tanks because we run a water column that is too rich.

Aquatic plants can and do absorb nutrients in the water column through leaves, but it doesnt have to be nor is it the best way to deliver nutrients in an aquarium. Ideally, I like 70% support coming from the substrate and 20-30% coming in the form of liquid dosers. Why dont you see an amano tank with just flourite like everyone uses? Because he knows flourite does not compete with fine-grain organic material as far as plants go. The particles that collect in between flourite beds accumulate and pollute your tank slowly unless you siphon regularly. There is no siphoning in nature, there is only larger animals breaking down smaller ones. Siphoning a tank wrecks this process, and too much waste collects before it is naturally reduced. The best way is to have a dirt-particle sandbed that is slightly rich with once-living material, and change water regularly as it feeds the water column. The bed is slowly replenished by fish poop and broken-down food particles.

**Want to add that a flourite planted tank will also work (obviously very popular) its what I use because Im too cheapo to locate and pay for powersand. But in doing the regular siphonings I am also required to dose macro/micronutrients through the water column which feeds algae. AFter experimentation, a fine balance can be found that still works. I am only meaning that an ideal, easy to balance system would use the organic fine-particle substrate and it will work right off the bat with no experimentation in dosings/algae outbreaks. Heck, you can grow aquatic plants in zero substrate if you want to as this is how hydroponic gardens are designed. You will just be doing more water column dosing and with high light levels things get a little green coating on them sometimes.

if you are running high lighting and dense planting, adding your Fe, Mg, K and N lightly to the water column may be helpful as your plants are asking a lot in terms of nutrients in such as small tank. Thats why I like 20-30% use of liquid fertilizers.

Stock with 3-4 small fish like killies or something small, if you won't load the tank down to heavy you will need no filtration of any kind. Getting a CO2 setup would do wonders in the tiny ADA setup and it can be done well.


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Old 06-28-2003, 04:28 AM   #3
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wow! lots of info, thanks. I'm not sure if I'm going for the full "Amano" treatment with this tank. It's a tank I had already set up (houses 1 sun sal. betta, some ember tetras and a never seen woodcat.) I'm not sure I have the time/inclination to do pruning and maintenance on such a high light/fast growth tank, but I'd love to try.

The hellolights link was great though. I didn't know that about the e. tennellus (the clear running water bit.) In my big tank I'm having an ongoing issue with algae on this plant only. I will try a stronger current, and more water change to see if the problem goes away.

The little tank has amazingly little issue with algae, in spite of the direct sunlight. It's well balanced, so I think that helps. I just would like a little faster growth. At the rate it's growing right now, it will be at least six months before the growth is mature. I suspect a little more light would do it.

High tech tanks fascinate me in theory, but it's a tremendous amount of maintenance, compared to what I'm trying to do. That being said, your post was the clearest I've seen on high-tech heavily planted nano tanks. Thank you, there's a lot that I can use in my "less" high-tech application.

Stacey
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Old 06-28-2003, 05:15 AM   #4
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If you only want about 3 wpg, go to hellolights.com and order there 9 watt PC light fixture and add that into the hood. That will give you about 3.5 watts per gallon, which, is enough to grow about anything at a decent pace.
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