Ulva Lactuca Marine Macroalgae Expand

Ulva Lactuca


The Ulva Lactuca marine macroalgae species is a medium fast growing and very palatable species, therefore it is a great natural food source for the marine tank. With its vibrant green colours, it will be a beautiful highlight in the aquarium too.

This algae will grow towards the light in one beautiful piece, with beautiful different green shades and provides as well natural shelter for copepods

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£ 6.95

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Ulva Lactuca - Official Algae of the Year 2015

These macro algae like the light but is fine with medium strong light conditions too.

Very palatable and a great natural source for your fishes etc. Our tang loves it, so keep some algae for example in the sump to let it grow back again.

As it eventually will attach itself to rock after a long time, we recommend to start with to glue it on a piece of rock to keep it in position. It is very easy to trim by just removing the excessive algae. It forms smooth discs and grows in larger chunks, which can attach themselves to rock etc.

Clear parts of it should be removed as they are decomposing.

Like for most marine macro algae a higher level of Nitrate and Phosphate, in addition to the supplement of Iron, Magnesium and Trace elements will improve the growth of this algae.

Please note
It is often known as Sea Lettuce and popular as a salad etc. But we sell these algae just to use in the marine aquarium!

Please note
Our macro algae are from fish free macro algae tanks, although we use sometimes pictures for demonstration purposes only which will include fishes, seahorses and or corals. 
We do our best to quarantine, treat and remove any unwanted hitchhikers, parasites etc from our macro algae but we can not guarantee that the algae are completely free of anything unwanted, not limited to Copepods, Rotifers etc. This is simply because that sometimes eggs, spores, etc can remain viable but not visible and hitchhikers can still stay hidden, especially in dense algae structures, despite our strict quarantine efforts. 

All macro algae will be thoroughly dipped in a professional solution to deactivate hitchhikers as good as possible before posting. If you don't want this, please send us a message together with your order.

We highly recommend nonetheless that you properly quarantine anything new before adding it to your marine tank.

We aim to offer you the healthiest and best quality macro algae on the market, therefore, all of our macro algae comes with a 100% Satisfaction Guarantee.
The images on this page are for example only, actual product appearance may vary. 
Common NameSea Lettuce
PlacementRock (attach)
Growth Rate:Fast
Food Value:Very Palatable
Nutrient Uptake:Very good
Flow Rate:Medium
Light:Moderate to High
ColourGreen Macroalgae
Path: > > > Ulva Lactuca

100% Satisfaction Guarantee

We want you to be fully happy with your new algae addition. Therefore we offer you a hassle free Satisfaction Guarantee.  

If you are not 100%  happy with the macroalgae you received on arrival we will refund you the full money back *1.
We even will cover the return costs. The refund will be offered after we arrived and checked the returned algae.

*1 = Valid for UK Orders only, please see our Terms for EU orders HERE 

Top Quality Macro Algae Guarantee

We offer you marine algae from our mature macro algae mother colonies in a premium quality & 100% healthy. Sustainably grown in the UK.

All macro algae we sell will be normally heat sealed and wet wrapped when posted to you, protected in a small box which assures that it doesn't get damaged while in transit. 

Best Price Guarantee

We won't be beaten on the Premium Quality of our Macroalgae cultures, and surely not on the price either!

Have you seen the same macro algae somewhere else cheaper?

Please just send us a message HERE and we will check your request within 24 hours ( working days only ).

When we can match the other price we will send you a discounted offer which will be valid for the next 7 days after receiving our email. 
This offer will be just valid for purchases using the email address provided before.

The price match offer is only valid for identical, same size/amount and available macro algae species.
As a proud UK based tax paying business, we don't price match any offers against auction sites or from private sellers.

The price match offer is just valid for UK deliveries. We reserve the right to refuse a price match request.

If you have any questions please don't hesitate to contact us, please.

Yours Livealgae UK

Livealgae UK

Send us your question

questions Ray on 02/03/2020

Hello , I've just started a new tank /cycle for seahorse , it's a juwel lido 200 . I seeded it 8 days ago and am monitoring it's progress daily , I'd like to plant it with some live plants and would appreciate some help . Can you advise and supply the best and most colourful plants and most importantly, when I should add them Tank is currently only showing 0.5 nh2, o no2 and nil no3 so in its very early stage



In addition to the whatsapp message you send us here some further informations as discussed.

For a new tank a problem might occur with micro algae as this is likely - especially in the cycling time - able to overgrow the macro algae.

We therefore would not recommend to add most macroalgae species in such an early stage to a tank, especially slower growing macro algae species.

But saying this adding faster growing macro algae species like Chaeto or some Caulerpa species might be actual beneficial as they grow fast enough which reduces the risk that al  of it might get overgrown by micro algae and it can take out Nitrite and Silicate and therefore speed up the cycling process .

I hope this helps and when you have any further questions please do not hesitate to contact us again.

Kind regards
Manfred - Livealgae UK

questions Adrian on 04/09/2018

Can I keep any algae in quarantine Tank when using copper based solutions? Would there be problem if I can then moving to a sump or main reef tank as food for tangs?


Hi Adrian.

Thank you for your message and I am sorry for the delay, we had unfortunately a problem with our question module.

I hope it still might help you. Although we never used copper as our algae tanks are fish free we received this question earlier and got feedback from our customers too.

From what we know we would not recommend to use macro algae in a copper bases solution. At a very low concentration copper acts as a micro-nutrient, which supports some physiological activities of the algae, but in higher concentrations it can affect the algae growth and the photosynthesis, hence damaging some algae species.

Customers who used it for a short time didn't experienced any problem with it though and explained the slower growth with a different used lighting.

Kind regards

Manfred - Livealgae UK

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Macro Algae

1 of 1 people found the following review helpful

As always good service. The Algae is good quality, hope it grows as well as the last order of Algae (different type, for our seahorse tank). Will recomend to our fellow fish keepers.

0 1 2 3 4


0 of 0 people found the following review helpful

Excellent would highly recommend . Beautiful, thank you

0 1 2 3 4

All got eaten

0 of 0 people found the following review helpful

Within minutes my Tang eat all of it.

Shop owner reply (Oct 18, 2018):
Hi.\r\n\r\nI a,m sorry to hear this.\r\n\r\n\r\nUnfortunately, this algae is very palatable for herbivore fishes, like Tangs. We recommend therefore to place it in an area they can\'t reach or to place it in the sump, to let it grow, and feed it time to time to the fishes.\r\n\r\nPlease contact us, and we will find for sure a solution.\r\n\r\nKind regards\r\n\r\nManfred\r\nLivealgae UK
0 1 2 3 4

All good no problems

0 of 0 people found the following review helpful

All good no problems

0 1 2 3 4

Very friendly and good algae

0 of 0 people found the following review helpful

Fast delivery, good communication, no problems here :)

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