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-   -   which combination of lighting will give better plant growth.. (http://www.tropicalfishkeeping.com/beginner-planted-aquarium/combination-lighting-will-give-better-plant-113740/)

smit3183 09-09-2012 12:25 AM

which combination of lighting will give better plant growth..
 
Two t8 6500k or one 6500k and a 8000k? It's over a 55gallon

Boredomb 09-09-2012 09:40 AM

I use two 6500k over my 55 gallon and my plants grow good.
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Byron 09-10-2012 09:54 AM

Either will work well, but you will see a difference yourself in the colour hue of the tank. This may or may not matter to you.

I happen to like the mix of 6500K and 8000K because it creates a bit crisper cooler white. That is just my preference. I used to use this, but now I can no longer get the higher-K tubes so I'm using two 6500K.

Byron.

smit3183 09-10-2012 10:37 AM

I'm also struggling to balance the lighting to keep algae from growing but still get plant growth. I've been using to 6500k and getting brush algae or hair, it's one of them. Had lights on 10 hrs and eventually dropped to 8 but algae still grew. Should I maybe go back to 1 6500k bulb and do 10hrs? Just think their may be too much intensity with 2 bulbs over the 55
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Byron 09-10-2012 01:02 PM

Quote:

Originally Posted by smit3183 (Post 1237382)
I'm also struggling to balance the lighting to keep algae from growing but still get plant growth. I've been using to 6500k and getting brush algae or hair, it's one of them. Had lights on 10 hrs and eventually dropped to 8 but algae still grew. Should I maybe go back to 1 6500k bulb and do 10hrs? Just think their may be too much intensity with 2 bulbs over the 55
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Algae occurs due to light. It will always find sufficient nutrients, so when light is beyond what the plants can use, algae takes advantage.

Two T8 tubes over a 55g is not too much, and 8 hours is a reasonable duration. But the nutrients have to be present for these 8 hours so the plants can use the light.

Are you adding any fertilizers, and if so, which and how often? Do you know the GH of the tap water? And what plants arein the tank?

As an example, I have two of these tubes (48-inch T8 6500K) over my 70g 4-foot tank, and 8 hours is the most light I can give this tank or brush algae explodes. I dose Flourish Comp twice weekly. Brush algae is present, but basically under control.

Byron.

smit3183 09-10-2012 02:25 PM

Not sure what my gh is but I'm sure it's pretty high,I think I'm gonna go to a single t8 life glo for 8 hours and dose flourish comp once a week, would that be sufficient? I've got vals, couple Amazon swords, java fern, couple crypts and floating pennywort. I just don't want algae
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BradSD 09-11-2012 01:29 AM

Id like to add that you should make sure to do weekly water changes of 25 to 50 percent. Clean the glass while you make the water change, add your SeaChem Flourish, plant heavy, reduce to 6 to 8 hours of light time. Clean the substrate if you can with your water changer. Add some thio or cl2 killer after water change and things should get better. My algae always shows up if I get lazy doing water changes, they are a must.

Byron 09-11-2012 12:16 PM

Quote:

Originally Posted by smit3183 (Post 1237671)
Not sure what my gh is but I'm sure it's pretty high,I think I'm gonna go to a single t8 life glo for 8 hours and dose flourish comp once a week, would that be sufficient? I've got vals, couple Amazon swords, java fern, couple crypts and floating pennywort. I just don't want algae
Posted via Mobile Device

The Vall may have difficulty with only one tube. The other plants will be OK long-term, but changing the light this significantly can set them back temporarily, just so you know.

If the water is medium hard or harder, Flourish once weekly should work with one tube; twice weekly with two.

Brad, what does thio or cl2 killer refer to?

Byron.

Quantum 09-11-2012 07:40 PM

sodium thiosulfate - for dechlorination

BradSD 09-12-2012 10:50 AM

Sodium thiosulfate is a chemical to knock out the cl2 in your tap water and is also used in the chemical industry. I have used it extensively in my tanks after ever water change. It is also used in chemical plants to kill unwanted cl2 and there is a version that is used in fish aquariums. It looks like a salt that you disolve with water, then add drops per instructions. Its dirt cheap and works perfectly, I make up a quart at a time and it last atleast one year for just pennies.


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