I have a 90g high tech moderately to heavily planted tank that I just don't love. Its just not the right time for me for this tank. So its a standard 90g, with 3 48 inch T5H0 lamps raised 1 inch, CO2 with drop checker, EI, and sand substrate. I want to get rid of the bulk of the plants and Co2. Instead if possible wouldn't mind having this tank low tech wtih my melon sword, anubias, and a monster of a Aponogeton Ulvaceus. How can I run my light fixture to keep these plants without Co2 and not have tons of algae? Also does low tech change the EI dosing regime? Thanks
Try running just one or two bulbs, also reduce the duration/time the lights are on. Ferts should be cut back too. You will have to play with this to find a good balance with the new system. If you have a plain sand substrate, you could always cut out the EI and use root tabs instead. Some K may still need to be added though.
thanks for the input. I was thinking about only running one or two bulbs, but I really like how my bulbs compliment each other. If I lift the lights 5 or 6 inches do you think I could run all three? Also it is plain sand.
I was thinking about only running one or two bulbs, but I really like how my bulbs compliment each other. If I lift the lights 5 or 6 inches do you think I could run all three? Also it is plain sand.
Have you read Hoppy's sticky in the lighting section, Lighting an Aquarium with PAR instead of Watts? Using all three bulbs suspended depends on the bulb brand and ballasts. You can put window screen over the surface to reduce the par value by 30% as well if you want to keep the same colors. My guess is that all three would be too much for a low tech but it depends on those variables. Otherwise nice looking tank!
I guess what i could do as a compromise is lift the lights five inches and run Co2 on a medium set up. This way I should be able to run my lights, keep the plants I like, and not have too much of a head ache. Or at least it sounds good.
You can't expect to get low light with that fixture raised only 6 inches. Each bulb is probably giving you about 30 micromols of PAR when 28 inches from the substrate. That alone is good low light. Even two bulbs might put you in the high medium light area. To be sure what PAR you are getting you will need to get a PAR meter or a lux meter to measure the actual intensity at that distance.