Frequently Asked Questions - FAQ about the Beautiful World of Marine Macro Algae.
The most common and widely available
The second biggest group are the red
The third largest macro algae group are the brown
For a macro algae tank we recommend the following guideline for the marine water chemistry:
This may be different for reef tanks or systems with a refugium
( sump )
As a general rule, this is for most macroalgae species we sell, but there will be some which will need different environments. If you are unsure please ask us before you order.
Temperature: Between 23-28 °C
Salinity: 1.024 - 1.025
Nitrate: Between 5-10 ppm
Phosphate: Below 1 ppm
Magnesium: Around 1200 ppm - 1350 ppm
Calcium: Around 400 ppm - 450 ppm ( important for calcified species)
Iron: Around 0.01 ppm
Iodine: around 0.04 ppm
Macro algae will need primary good lighting plus Nitrate and Phosphate to grow.
Most species will grow well under a Full Spectrum light or a lighting with a colour spectrum between 5000k to 10000k.
Daylight has a colour spectrum of 6500k, which will be good for most macro algae species.
Beside of the major nutrients Nitrate and Phosphate they will need some minor nutrients like Iron, Sulfate, Biotin, Manganese and Iodine, which will normally be added with your regular water changes or can be added with separate trace element additions.
If you like to know more about Nutrients for Marine Macro Algae
For most marine
We recommend 2-4 watts of PC or more per gallon of water in your aquarium setup which will be sufficient for most macro species in a standard depth tank.
While the light intensity is measured in output rather than watts, it is often very hard to determine the output of a particular light source, and therefore it is often more helpful to use watts as a more useful secondary measuring method.
Some algae, especially fast-growing algae like some Caulerpa species need regular trimming, which is as well perfect to effectively remove the nutrients from the tank.
Other macroalgae, especially the red macroalgae species grow slower and need more rarely trimming.
You will find for every macro alga we offer on the individual species website instructions how to care about the algae species best.
This can mean that parts of the algae first will die off before it will start to grow back again.
Keep an eye on the
Should you have still problems please just contact us.
Especially when it comes to some marine
Which means nothing else that the algae are dying off and the start of the reproduction cycle,
This mainly with Caulerpa species know
Therefore it is important to keep the water conditions as constant as possible and to remove any dead parts of the
But should it have happened a large water change is highly recommended?
If red marine
Just vary the location of the
We recommend for smaller reef tanks and Nano-Tank setups especially marine
Especially a lot of red marine
Have a look at our section for Nano-Tanks, where we added all the macro algae species which will do great in there.
Yes absolutely. We have an extra section for marine
Assumed that you have a suitable light for your macro algae above your sump we would recommend the following
Sometimes it won't grow in some marine tanks, in this case, we recommend the following Caulerpa species, which might need a bit more attention than Chaeto, but we use them since many years without any problems so far.
We have created a selection of marine macro algae which we know are often happily eaten by marine fishes.
But please keep in mind that we can't guarantee that your fish will like the
We have lots of hermit crabs and snails and they take normally just care about the nuisance algae, like green hair algae or film algae. But it might be, that they will eat the
Well, this is very hard to answer. As we will all have a different taste when it comes to the look and the beauty of marine
And it is quite funny, as they sometimes can't tell the difference between a coral or algae. ( surely no experts... just friends :) )
There are some macroalgae which look really stunning in our reef tank, and we would choose them as our favourites when it comes to the beauty of them:
As well they will need a sufficient amount of nitrate and phosphate in the marine water to thrive which often is not present to start with.
We would therefore not recommend adding
As well can especially in the first weeks of a new marine aquarium nuisance
After you added some fishes give it a few weeks more and it will provide a much better environment for the new marine
This will be different when you have a planted marine tank and you use special fertilizer to your water, to add the necessary elements for the
We recommend for the Triton Method TM to use marine
Have a look at the following category please:
Yes, there are a few species which will do well in a sand bed. Especially
Other macro algae like the Halimeda Species are very good as well for the substrate, but they will stay more in the spot you placed them.
Slow growing red
For an effective and fast nutrients export, which means the reduction of the Nitrate and Phosphate in your marine aquarium water, we recommend
You will find them here:
If you have any questions to choose the right
Especially in marine macro algae dominated marine tank setups it can be necessary to add Nutrients like Nitrate & Phosphate, Iron and other trace elements.
Especially Iron can support the growth of marine macro algae and can be safely added to the marine aquarium, following the instruction of the used Iodine solution.
There are some readily mixed solutions for most necessary nutrients available - often for freshwater plants - which should be used just for a closed planted marine aquarium tank, as it might be that some of the added trace elements are harmful to your critters or livestock.
Especially some Caulerpa species are growing very fast and can easily attach themselves to live rock, where it can be hard to remove again, as often just a tiny part of it can be enough to grow back again. As well there is a risk that it might overgrow your corals.
We recommend keeping invasive
In heavily algae planted marine tanks it is recommended to keep the light for the algae on 24/7, which will work with most algae species.
For Herbivore and Omnivore fish species, it will provide additional health benefits, as they will need marine algae to stay happy & healthy.
Often a discolouration of some Tang fish species is a sign of a algae deficit in the food provided.
Yes, they can! And therefore dying parts of should be removed from the tank. Especially some Caulerpa macroalgae species should be watched closely. Please read more about them in the extra point Caulerpa Case
We are sorry, but all
Yes, we are always looking for marine
If you have those algae we would love to hear you and either buy them from you or swap them against another macro alga you like to have.
It varies, we have some macro algae which we would recommend more for the sump, as they are invasive marine
Just get in touch via telephone or CONTACT US
It will depend on what macro algae you are looking for to attach. Most of the non-invasive species, like the very popular Red Grape species, can be easily attached by using normal cyanoacrylate super glue ( we personally prefer the Gel variation and our favourite brand is Loctite Super Glue Universal Gel).
Do you have any question we can help you with?
As an aquatic algae farm, we don't have a public shop to visit unfortunately but we are happy to post all our macro algae species within the UK for free to you.
And we are sure you will like your new macro algae addition once received.
You can register your interest on the algae page you are looking for to get an email once it is back in stock or stay informed via our Newsletter, and or to follow us on Facebook, as we will first inform there when our algae are ready to sell again, or when we received new
When a macro algae species sells well we have sometimes to take it out of the sale as it will need time to regrow again.
The time for this will vary, as some macro algae species will grow very slow, whilst other - especially various Caulerpa marine macro algae species grow quite fast.