bottle tank lighting recomendation
OK, haven't had aquarium in 30 years, but I recently purchased a couple of 15 gallon antique carboy bottles with the crazy idea of fitting them out as tetra aquariums. Its worked out well. I've developed some specialty tools for accessing inside. I'm now focusing on successfully growing plants and need some advise. I am using a single desk lamp fixture on each bottle tank with 100 watt clear incandescent light bulbs. This method was recommended by a local aquatic pond plant grower who clammed great results growing submerged types of aquatic plants with this bulb. Each bottle tank is fitted with a fluval 88g co2 dosing 1 drop per second. A heater, and small external canister filter is on each tank. I am Dosing with a micro, macro ,and potassium supplement as directed on the bottle, but I'm not testing anything. My question is about the best bulb for this arrangement. It must fit into the desk lamp fixture. The heat from the current lights has not been an issue, and I'm not as concerned with cost as much as good lighting. I am having mixed success with my plants, and am concerned the clear incandescent bulb maybe too much, or the wrong kind of lighting. All plants are being grown as purchase on coco matting from various aquarium plant growers on line. The carboy bottles have narrow necks with 3" openings and are 20" tall, so I am not sure how much light is being deflected. Overall the project is really cool, looks great, is a unique presentation, and been a great deal of fun. Fish are doing great, little to no algae, broad leaf plants are pearling. I need to hear from the experts here on the best bulb for this arrangement. Plants are Java fern, java moss, dwarf baby tears, nana anubius, dwarf pennywart. Responses appreciated. Java fern yellowing with brown pin holes, but growing tiny young plants on leaves. Dwarf pennywort slowly yellowing. Java moss thriving. Dwarf baby tears slowly yellowing.