If a 25W fluorescent light bulb cost $5.00 and a regular 75W bulb costs $1.00, and if
electricity costs $0.1/kWh, what will be the savings for the first year, assuming the light bulb
is used 4 hours per day?
a. $2.1 b. $3.2 c. $4.5 d. $5.3

I have a cold-water fish tank set up [and has been set up for over two years now].

The temperature ranges from 18oC to 23oC - depending on the seasons throughout the year.

It has many live plants in the aquarium too. With a fluorescent light, some algae does build.

Currently, I have cold-water fish (obviously) and I also have five Apple Snails - very good to watch!
I am just wondering what other species of snails would be okay in my tank. I prefer if they are good algae eaters and that they don’t reproduce as much, or not at all.
Or will Apple Snails be the only snails suitable for my cold-water set-up?

Only answer this question if you have snails in your tank, and can recommend me some.

Thank-you!!

Does the power source have the same cycle rate?

I have read several reviews stating that they are outstanding. I have always used natural light but moved to utah and now have to shoot indoors? Has anyone used both and if so what do you recommend ?

I have a 25 Gallon aquarium with the dimensions of 24 1/4 x 12 1/2 x 20 3/4 (LxWxH) and i want to set up a heavily planted tank. My question is that would it be good enough to just have two f15t8 fluorescent bulbs? they are 15 watts each and they are made to promote healthy plant growth. The problem is that i’ve read that there should be at least 2 watts of lighting per gallon and having 30 watts in a 25 gallon is 1.2 watts for gallon. Would i be good if i have high light plants or would it be better to go with moderate light plants. Any suggestions?

I just transferred my new betta to a 5 gallon tank complete with hiding places, filter, and heater. He loves the extra space, but when I turn on the light (very bright fluorescent bulb) he swims around and around the tank flaring at his reflection. He only stops when I turn off the light. I know excessive flaring can cause stress which can weaken his immune system and shorten his life. Would it help if I got a dimmer bulb? I was thinking of getting a background and more plants to hide the back and side walls as well…

I had a cheap fluorescent light fixture in my closet. The (2) 4 ft bulbs were always very dull and appeared to only light up about half way, even when brand new. I replaced the light fixture with a new Lithonia Wrap Lite 4′ fixture using T8 bulbs thinking the ballast was defective on the old fixture. Even with the new fixture I have the same problem. New bulbs in new light fixture were nice and bright for about 10 seconds and then started flickering and now they are dull, just like the old fixture. Any ideas on what’s going on here?

My 7-8 week old kitten Binx we got from our neighbour with the cat flu. I took him to the RSPCA and the vet prescribed a 1/8 of an antibiotic tablet to be taken twice a day, a saline eye wash and an ointment “framixin” as well as multivitamins because he was not eating well and did not have an apetite . A week later Binx was doing much better his sneezing stopped and he was eating a lot more. However his eyes were a major problem that was getting worse. The puss had stopped however his right eye started to finally open up while the left eyelids sealed to the third eyelid no matter how much I tried, I took him to the RSPCA yet again (fearing another scary bill, however, I was at ease this recheck was only 28 instead of the $50 consult.) the vet checked his open eye with a fluorescent dye test & concluded he had a corneal ulcer and the other eye needed separating. She took him in a separate room where she masked him for pain and separated his lids. When she got him back with one eye green from the dye and the other red from the separation I immediately thought Christmas lights! lol.
She advised me to continue with the saline wash however she said to apply a general anaesthetic to both eyes before applying framixin. Once again I left with a big bill and my tail between my legs. After one day I noticed that she had not separated the eyelids but split the third one halfway nearly so that u could still not see his eyeball. I called her up frantically but she assured me that that was the only thing she could have done in Binx’s situation as its the only way she could get to see if there was an ulcer beneath that third lid. what I would like to know is whether that 60$ procedure of splitting his eyelid and causing him pain was necessary if she cant even see his ulcer still and the framixin cannot get to the eyeball?
Argh i am no vet or bio expert but isn’t this just common sense or am I on the wrong track?
I need help as tomorrow I have another appointment with the RSPCA and I have done a lot of reading and I’m scared this could be a herpes viral infection? is there some other more effective antibiotic eye ointment for his eye. For now its more whitish with a tint of indescribable colour.. and on the far side I only noticed a few hours ago there is a reddish little patch toward the inner side of his eye . I’m not sure if it’s what I read as being neovascularization, which is good, or a sign the ulcer is getting worse… But hOOOWw can that be possible if I give him his framixin around 4-5 times a day! I’m a mother in distress!
I need professional help & second opinion ASAP

My fluorescent double-bulb fixture flickers. I have bought new bulbs, and the problem persists. Is this something I can fix myself (I am handy enough to be dangerous)? Its easy to access and the wiring is new, panel fuse is fine and nothing else in the circuit flickers.
It is in a heated basement. Not sure what T8 or 12s are.
The bulb is GE “watt-miser” F40CW-RS-WM Cool White E 34 Watt - and it’s 4′ long. Embarrassed to admit the kid at HomeDepot showed me what matched the one I brought in. Most help I’ve ever had in that store
Not sure about starters or age either.

Okay the full question now:
Calculate how much money you would save in one year by changing from an incandescent bulb to a fluorescent bulb. Assume electricity costs 10 cents per kilowatt hour and the bulb is on all the time for the whole year. The two bulbs in this picture produce the same amount of light. In the picture it says the incandescent bulb = 100 watts and the fluorescent bulb = 23 watts.

I would REALLY appreciate if someone could answer this! ^-^

After a power surge followed by a sort (less than 10 minute) power outage, power was successfully restored to my appliances including my televisions, computers, and refrigerators. Essentially, all appliances except for my fluorescent light bulbs. This includes all the long tube wall units in each room. Any thoughts/rationales?
Thank you for your input! So when FPL came to do repairs, I was told that the voltage coming to our home was fluctuating due to wiring being damaged which was their explanation for why some appliances functioned and others did not. However, this now poses a new question…my refridgerator and 3d HD TV worked fine and the light bulbs malfunctioned? Well, they re did the wiring and everything works again.

it has a large light with a fluorescent bulb what other lighting would i need to keep 100*F day temp and a 60*F temp at night? i live in so cal so the weathers not too dramatic. i have medium size rocks in it now theyre more like pebbles or gravel. would that be okay for a baby bearded dragon? and can i have two in one tank? thanks for reading

I needed some life in my workspace so I bought a small pink polka dot plant to bring in some color and perk up the place. I don’t have much natural light in my cubicle (there is some peeking around the corner) although there is a bright fluorescent light right above my workstation. The little care tab on the plant itself says it’s a shade/partial shade plant so I figured it would be ok in this environment, but other sources tell me it may require more light. I haven’t brought the plant in to work yet and it seems to be doing ok at home for the time being. Oh, and I DO NOT possess a green thumb. If this plant doesn’t work out I may resort to an artificial flower arrangement of calla lilies…

i bought a night-switch, a switch operated by a light sensing resistor which allows the flow of current when it cannot sense sufficient amounts of light anymore, usually used in street lamps…
the problem is, when its dawn, there either enough light or not enough light… but somewhere in between the voltage readings are low then rises higher and higher as the sun sets, obviously, i cant use a fluorescent lamp here since it’ll endanger the ballast because of the low voltage parts at sun set or sun rise.
how do i solve this slow switching problem? a magnetic contactor fluctuates at this point. pls help! thanks!!

Hi all, I just connected up a 40W round flouro to a motion sensor, it will switch on but won’t switch off. If I connect an incandescent it works fine. The literature with the motion sensor says ” This sensor may not effectively work with discharge lamps like fluorescent lamps, self ballasted lamps, HID lamps etc. Please consult with lamp manufacturer for suitability. ” I put an electronic HPM timer in line before the lamp [set to on always/ manual on] and it works fine. Just curious why this happens. I’m a radio tech [adv dip] and my mate George is a sparky and neither of as can answer this one. Cheers, Chris.

i bought a night-switch, a switch operated by a light sensing resistor which allows the flow of current when it cannot sense sufficient amounts of light anymore, usually used in street lamps…
the problem is, when its dawn, there either enough light or not enough light… but somewhere in between the voltage readings are low then rises higher and higher as the sun sets, obviously, i cant use a fluorescent lamp here since it’ll endanger the ballast because of the low voltage parts at sun set or sun rise.
how do i solve this slow switching problem? a magnetic contactor fluctuates at this point. pls help! thanks!!

Why or why not?

MP: Do you still look good under fluorescent lighting :p

Fluorescent tubes will only light a little bit at the ends (not throughout the whole tube). How do I know if I need new tubes or a new ballast. I have already replaced the ballast once about 3-4 yrs ago, as well as new fluorescent tubes. Is that a normal life span for each? These are in my closet.

Hi,

I’m planning to getting a 50 x 50 cm soft box with a 50 W (250W Equivalent) 5400K 220V Daylight Bulbs. I have a Canon 550D (Rebel T2) camera and I will be taking head shots most of the time in a small studio.

My question to you is: Would a soft box with those statistics be efficient enough for head to shoulder shots? I have read somewhere that they are not very good as the wattage’s are not what they claim to be.

My second question is: What type of lighting would I need to buy for my (studio room) e.g 40 watt fluorescent bulb or 50 watt daylight bulb..

I’m new to the photography field and have only recently learned to use my camera so i am a newbie.

I would appreciate any of your help you could give me.

Thank you very much in advance.

I bought two 120CM black light fluorescent bulbs to my room to look more psychedelic.
will they effect my cat / other animals in any way?