一, The nature and creation mechanism of aquarium light attenuation
Over time, LED light sources may become less bright because the semiconductor material wears out.The major ways it shows up are:Less light flow Changes in spectral distribution Drift in color temperature Less efficient in turning energy into workLEDs canThe L70 standard is often used by the industry to measure how long something will last. This means that when the luminous flux drops to 70% of its original brightness
2. The biggest threat to aquarium lights is being in a hot place.
Aquarium lights function well in certain conditions for a long time:a lot of moisture Weight of water vaporA lot of salt spray corrosion risk If the heat dissipation design isn't good enough, the chip's junction temperature will keep going up, which will lead to:Fluorescent powder wears out quickly.Reducing the lifespan of electrolytic capacitors for the power source that drives the systemThe rate at which light efficiency drops is speeding up
二,Changes in the biological state: the first indicator that light is fading
1. The occurrence of excessive aquatic plant growthIf the following changes happen to aquatic plants, it is vital to think about the problem of light decay:A lot of lengthening of stem nodesMore space between the bladesA lot of growth upTaking off the bottom bladeThis means that photosynthesis is less effective, and water plants have to grow longer to get more light.Red aquatic plants are especially sensitive to how bright the light is.
2. Plants that live in water change colorSome common signs are:The grass turns green.The grass that is green gets lighter.Purple water plants stop glowing.This is a common sign that there isn't enough spectral energy.
3. Changes in the algae that live in coral
The shift in coral color is the most visible sign of light loss in marine systems.Things that could happen:The Browning effectStopping edge developmentFluorescence reductionTentacle opening is smaller.This is due to the reduced activity of symbiotic algae within coral structures.
三,Professional testing method: use science to figure out how much light is lost
1. Illuminometer detecting method (best for regular players)Use an illuminance meter to take a measurement at a set point.Steps to follow:Turn off any lights outside.Keep the water level the sameTake measurements at the center and edge of the cylinder block separately.Keep track of changes in numbersHow to judge:Normal aging causes a 10% drop in brightness.Start paying attention when the brightness goes down by 10% to 25%.If the brightness reduces by more over 30%, you should get a new one.
2. Finding the PAR value (professional seawater system)
PAR is a key way to measure photosynthetically active radiation.For tanks with coral:Most of the time, SPS areas need 200 to 400 μmol/m²/s.The LPS area usually needs 80 to 200 μ mol/m ²/s.Coral development will slow down if PAR drops a lot.
3. Method of comparing photos
This is the cheapest way to do it, but it works well.Using the same gadgetSet shooting angleParameters for fixed exposureMake a record every three monthsLong-term comparisons can show small changes.
四,The standard for how often to replace aquarium lamps based on industry experience
aquarium light The cycle for replacing parts changes depending on the situation.
Recommended replacement cycle for different use cases
An ordinary ornamental fish tank lasts for 2–3 years.
Water grass tank with medium-low light for roughly two years
High-gloss water grass tank for 1.5 to 2 years
SPS Coral System for 1 to 1.5 Years
五,A scientific way to keep light from fading too quickly
1. Control the power used to runLong-term full power operation will speed up the aging process.The daily operational power is kept at 80% or less.Get better quickly when you need to
2. Clean the cooling systemCleaning on a regular basis:Dust on the fanfins on the heat sinkMoisture in the lamp shadeSalt spray deposition can change how much light passes through, especially in saltwater tanks.
3. Set a time for the lights A reasonable amount of time for lighting is quite vital.General advice:Freshwater grass tank: 6 to 8 hours
Coral tank with seawater: 8 to 10 hoursToo much light time doesn't help plants grow and could even put pressure on the environment.
六,that the aquarium lights need to be changed right away
In the following conditions, it may be necessary to replace something right away:Lights that flash a lotLight beads in the area switch off
A big difference in color temperatureThe shell is somewhat misshapen.Strange noise coming from the cooling fan
Dark patches are clearly visible in the lit region.These are not only problems with light fading, but they could also be security hazards.
