TankMate Posted January 11, 2023 Share Posted January 11, 2023 Are 2 Fluval 3.0 lights set at 50% equal to 1 set at 100%? I'm trying to figure out how to duplicate 1 light at 100% with 2 lights. Imagine a 48" long tank with 2 48" long fluval 3.0's on top of it (one right in front of the other). I'm guessing the 2 lights should be set at 50% each but need confirmation. Thank you. Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 Did you already purchase the lights? Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 (edited) Yes. I bought them from aquarium coop. Edited January 11, 2023 by TankMate Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 Bummer. Okay, so no it's not 100 when combined. There's certainly some crossover area that will be brighter than 50% so keep that in mind. Just FYI: Using Amazon pricing. 48 inch Fluval 3.0 $230.00x2=$460.00 Chihiros WRGB2 120 is $379.00 https://aquarockscolorado.com/products/chihiros-wrgb-ii-120-black?variant=39986628788390 The Chihiros is a much better light significantly. You would only need one for a standard 75 gallon. Superior contrast than Fluval and would grow any high demand plants. Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 Thank you. I will keep that in mind for my next purchase. Any idea what the 2 fluvals should be set at? They are right next to each other so should be lighting up the same area (I expect a lot of crossover) Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 I had the same setup and ran them around 72% each, but I also inject CO2. Let me see if I can find my old settings. Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 (edited) Sadly, I've deleted all my snap shots of my settings. All I have is a comparison shot. Not helpful for you but at least you can see the difference. Very old shot of my tank. Top picture is the double Fluval. Edited January 11, 2023 by Mmiller2001 Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 (edited) Thank you. I am not running CO2. I use liquid carbon daily, liquid ferts and root tabs. I have another tank with 1 fluval 3.0 set at 100% and use liquid carbon / ferts and the plants are doing great. This tank that has the 2 lights has the same plants but they just aren't performing like my other tank. It seems it has to be the lighting. This tank with the 2 lights is 3 inches taller. Your plants do look better under the new light. That's for sure. Edited January 11, 2023 by TankMate Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 Running 2 is a lot of light for sure. I would try 50% on both and just see what happens. Having 2 now will give you good spread for sure. Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 Thank you. Ill give that a try. Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 (edited) Any chance you can tell if these plants are getting too much / too little light? I put some in 2 of my tanks. These are doing terrible and the ones in the other tank are doing really well. I added them to both tanks at the same time - about 6 weeks ago. Edited January 11, 2023 by TankMate Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 What does your dosing look like for column fertilizer? Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 125 Gallons. Flourish - I'm using about 5ml per week. Recommended dose would be 4x this amount but I have read that algae can become an issue if you use the full recommended dosage. Maybe I should increase? Flourish excel - I'm using 20ml daily. Recommended dose is around 12ml daily. Also use root tabs (seachem) Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 Ah okay, Flourish is just a supplement of Micros and almost no Macros. It looks like the plants are dropping lower leaves to support new growth. Unfortunately, root tabs can be misleading and a comprehensive water column dosing schedule is still needed. You will want to use an all in one fertilizer like Easy Green or NilocG. They're others, but these are easy to get. 1 Link to comment Share on other sites More sharing options...
TankMate Posted January 11, 2023 Author Share Posted January 11, 2023 Thank you! I didn't realize that my fert choices didn't cover all the bases. I will get something new for sure! 1 Link to comment Share on other sites More sharing options...
Mmiller2001 Posted January 11, 2023 Share Posted January 11, 2023 On 1/11/2023 at 2:19 PM, TankMate said: Thank you! I didn't realize that my fert choices didn't cover all the bases. I will get something new for sure! It's not your fault, Seachem needs to label better. 1 Link to comment Share on other sites More sharing options...
nabokovfan87 Posted January 13, 2023 Share Posted January 13, 2023 To your other question. Partially the light placement depends on where the plants are, but to maximize coverage I would have them 1/3 of the way from the front and back of the tank. Right next to one another isn't good for heat or for spread. Slightly apart helps with refraction and the penetration across the entire substrate. Link to comment Share on other sites More sharing options...
Ninjoma Posted January 13, 2023 Share Posted January 13, 2023 On 1/12/2023 at 10:26 PM, nabokovfan87 said: To your other question. Partially the light placement depends on where the plants are, but to maximize coverage I would have them 1/3 of the way from the front and back of the tank. Right next to one another isn't good for heat or for spread. Slightly apart helps with refraction and the penetration across the entire substrate. I'm working on a similar setup, so I've been following along with this thread. How would you take the hinge on the glass top into account for positioning the two lights? Link to comment Share on other sites More sharing options...
nabokovfan87 Posted January 13, 2023 Share Posted January 13, 2023 On 1/12/2023 at 10:49 PM, Ninjoma said: I'm working on a similar setup, so I've been following along with this thread. How would you take the hinge on the glass top into account for positioning the two lights? This is how I would plan it out. 1 Link to comment Share on other sites More sharing options...
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