What is daylight?
Daylight (or white light) is made up of a series of colours, collectively referred to as a spectrum.
This is known because when a beam of white light is passed through a glass prism; the white light splits into seven visible colours with red shades at one end through to blues and violets at the other.
Filters block colours
When a white light source has a coloured filter placed over the beam the observer will then see the light as a colour, i.e. a green filter shows as green – blue as blue, etc.
It is useful to realize that when white light hits the filter, the other colours are being blocked. The filter is allowing only certain colours of the spectrum through.
REGEN-Blue® blocks the red end of the spectrum
By adding REGEN-Blue® to water, a filter is being created to block colours from the red end of the spectrum getting through to the bottom of your pond or lake.
Photosynthesis needs red light
All plants, surface or submerged use the process of photosynthesis to thrive and grow and the whole process relies on red light to drive it.
By adding a filter to the pond or lake water you are blocking some, or all, of the red light and the process of photosynthesis is interrupted, with the result of little or no further growth.
A little about Photosynthesis
All green plants need sunlight for their reproduction, the energy from sunlight acts upon a green pigment (chlorophyll) which combines with water and carbon dioxide from the local environment to produce sugars and oxygen. Chlorophyll absorbs red light (centred about 650nm). Leaves look green as blue and yellow are main colours reflected by chlorophyll.
Photosynthesis is the manufacturing of sugars from carbon dioxide and water, in the presence of chlorophyll and light energy. Oxygen is then released as waste from the process.
The light source used for photosynthesis is natural daylight. It is this element of photosynthesis that can be manipulated to stunt the growth of algae and submerged weeds.
In a pond containing clear water, light easily passes through and any plants or nutrients present use this to grow. Plants get taller and grow towards the surface and single cell organisms (such as algae) start to float towards the surface. It is the floating, or suspended cells that can make the pond water take on the “pea green soup” look.
By preventing some of the light from reaching below the surface of a pond, photosynthesis is interrupted in deep-lying pond life such as algae. However, surface life such as lily pads or reeds, which photosynthesis either on or above the surface of the water, will not be affected. As it is not practical or desirable to have ponds built indoors or permanently covered, it has become necessary to develop another way of preventing the light from reaching the base of the pond.
Instructions for use: Calculate the volume of water in the pond. 1 litre of dye is required for every 5.7 million litres of water for the original dose. Apply to different parts of the pond to maintain the level of dye in the water. As a general guide add 10-20% of the original dose monthly.
Dyofix is a concentrated dye and may stain skin and clothing. Always wear rubber or latex gloves when handling. Wash any contaminated clothing separately.
Frequently asked questions about pond dyes
The list of REGEN-Blue® pond dye FAQs is forever growing as we add our answers to your questions to help the decision making of our customer’s future purchases. If your question is not below please ask away. We are happy to assist and we will add your question(s) about REGEN-Blue® pond dyes to this list.
Will REGEN-Blue® pond dyes work in all ponds and lakes?
Our pond dyes will create a light filter in all waters. The minimum doses do require at least 1 metre of overall depth, anything less requires more to compensate, for example, a pond at half a metre will need a double dose.
Please note that not all weeds and algae are susceptible to treated water at minimum concentrations.
How long the pond dye last?
There is no definitive answer to this question as strong sunlight and rainfall both have an effect on the dye. The Sun will fade the dye and rainfall will dilute it. We suggest that a monthly top up of 10 to 15% of the original dose should be made in order to keep the dye concentration at its best.
I have fish in my pond, will they be safe?
The dosage recommended is very low and has no effect on fish. The European regulations have a fish test that uses the dyes in concentrations 1000 times greater than our suggested dose without any harmful effects.
My pet drinks from our pond, will it be ok?
Dogs, cats, rabbits… We have been asked this question many times and there appears to be many exotic ‘pets’ as well as the more popular ones. Water treated with REGEN-Blue® pond dye will not be any different to the way it was before being added, so, if the pets were OK before, they will remain that way. Please be aware of Blue Green Algae
Our pond is visited by frogs/newts/Insects/invertebrates/dogs/cats/rabbits/insects – will the treated water be safe for them to drink?
The actual dye content in the water is very low and will not be harmful.
Please note that a well known brand of energy drink has 65 times more dye per litre than a litre of pond water dosed at the minimum rate!
Do REGEN-Blue® pond dyes help to reduce weed growth as well as algae?
Yes. Rooted weeds at the bottom of the pond require sun light to grow in exactly the same way as algae. Weeds that have leaves at, or above the surface of the water will be able to benefit from the sun light, so it is recommended that REGEN-Blue® pond dyes should be applied in early Spring before the weeds start to grow. Prevention is always better than a cure!
The weeds in our lake are growing, is it too late to use REGEN-Blue® pond dye?
Some weeds require more light than others to photosynthesise, those requiring a lot of light may not be able to support their own growth even when they have hit the surface. As stated above, try to apply the first dose in spring before growth is established.
What happens if we put too much pond dye in our water?
The water will be a deeper shade, and possibly opaque. Over time, rainfall will dilute the colour to the point where it will all be gone. It can also be diluted by adding more water. If emptying the pond is required, the water should be flushed into soil beds – please avoid letting over dyed water get into surface drains or streams. Any water getting into a stream or drain will not be harmful, but anyone seeing coloured water flowing by may report this “pollution” to the authorities for investigation.
Does the pond dye stain?
In concentrated form, dyes WILL stain hands and clothing, so it is always recommended that gloves should be worn when handling the products. At recommended dilution rates no staining will occur.
REGEN-Reflect® uses a higher concentration of dye and may result in slight discolouration of surrounding stones and water features.
Spillages of the dye on surrounding areas should be washed with copious amounts of water first and strong sunlight should fade any residue.
Is it safe to swim in water treated with REGEN-Blue® pond dyes?
Yes. All REGEN-Blue® Pond products are made using European Food Approved Colours, but give the concentrated dye time to mix into the water before diving in!
Can we use more than the recommended dose?
REGEN-Blue® can be overdosed by many hundreds of times. It is sometimes necessary to add more than the minimum dosage, for example, if the weeds have grown and are getting near to the surface, this is normally 2, 3 or 4 times the minimum, but it depends on just how close to the surface the weeds are. There are a few lake owners that want to enhance the look of their lakes and, as with Kew Gardens in 2013, they used 10 times the minimum dose.
I have seen photographs where REGEN-Blue® Pond Blue has been used and this made the water look very blue, why is that?
There can be many reasons, photographs taken as the pond is being dosed, owners deliberately over dosing for effect, even the reflection of a blue sky can make the water look bluer than it actually is. It is almost impossible to capture just how pale the water is once coloured.
How deep in shade will the water be once the pond dye has been applied?
The illustration here shows that the minimum dose is almost imperceptible. Please note that the colours shown are indicative and are not intended to be taken as accurate.
How long does it take for REGEN-Blue® pond dye to mix into a pond?
This depends on a number of factors. The size of the pond – with a very big pond, it may be difficult to reach the middle (without using a boat). The “stillness” of the water – the more movement of the water, the quicker the pond dye will mix. If re-circulating pumps are used the mixing will take less time. The simple movement of fish helps to distribute the REGEN-Blue®.
Will the REGEN-Blue® damage water pumps?
No. The dye is completely soluble and will pass through pumps and filters very easily.
Can REGEN-Blue® be used with other pond dyes?
REGEN-Blue® can be used with other chemicals provided that they are not Chlorine based. Chlorine will attack the dye by bleaching it and rendering it useless.
What do I do with unused REGEN-Blue® pond dye?
Keep it in a cool, dry place with the lid firmly in place and use it for “topping up” or the following years(s). Stored in this way, REGEN-Blue® has a long shelf life.