Egeria densa, formerly known as Elodea densa and often referred to as 'Elodea' or simply 'pondweed'. Egeria densa is an excellent substitute for Elodea Crispa which is no longer permitted in the UK.

Elodea can be used as a live model to observe chloroplasts in motion (cytoplasmic streaming) inside of the cytoplasm. Elodea leaves are only 2 cells thick and unlike other plants, its epithelial cells carry out photosynthesis. Experiment features in OCR GCSE Biology curriculum (PAG B6, PAG B7).

Do not release into ponds or rivers as Egeria densa can be invasive.

Sold per 'bunch', each bunch contains 5-10 strands, each 10-15cm long, approximately 80-100cm in total.

Growing conditions - Upon receipt submerse immediately into dechlorinated (or aged) water. Ideally keep between 15-20°C with either a grow light or north facing window (to avoid the sun overheating the water). To encourage healthy growth you can use an aquarium fertiliser.

Mainland Britain

Our UK mainland delivery charges are as follows: (All figures are exc. VAT)

We send all items by Royal Mail 24. Please allow 2 days for us to dispatch, although it could be longer at busier times. This is a tracked service but NOT signed for, if you require a signed for service please select next day delivery.

For next day delivery, please order by 12 noon, item must be in stock. All stock levels are shown on the web, if showing as out of stock or prepared to order and required urgently, please contact us as we may have stock! Next day orders are sent by Royal Mail Special Delivery by 1pm.

Drosophila are always dispatched on a Monday, please advise when ordering your preferred delivery week.

Our working hours are 9.30am - 4pm Monday - Thursday, 9am - 12pm Friday. Orders received outside these hours will be processed the next working day; orders are only dispatched Monday-Thursday (Monday-Wednesday for perishable items). Hours vary during school holidays but we are usually available via email.

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Northern Ireland

Sadly, due to the UK leaving the EU, we can no longer supply Northern Irish customers with any products the have codes starting with an 'L' or 'P'. This is due to the requirement for all live or preserved products to have an import licence specific to the customer purchasing and the product being purchased. As each licence takes 2 weeks to obtain, and involves a considerable amount of paperwork, we have made the difficult decision to stop offering these products to Northern Irish customers. We can still offer equipment, i.e. products with an 'E' code, as these simply require customs documentation.

We apologise for the inconvenience and if the legislation changes we will review our decision.

British Islands

Delivery charges to the Isle of Man, Channel Islands (including Jersey & Guernsey), Shetland, Orkney and all the other islands we've missed, are the same as to mainland Britain (see above). The main difference is that delivery is likely to take a little longer, and for this reason we cannot guarantee next day delivery.

In addition, we cannot ship any liquids, so any 'wet' specimen ordered will be sent vacuum packed rather than in a jar.

International Orders

We welcome international orders but please note only non-perishable and non-animal derivative items, i.e. only those with codes starting with an 'E', can be sent.

Buyer is responsible for all import duties and taxes. EU businesses need to supply an EORI number before we can ship.

EU Delivery: £22

Non-EU Delivery £28

If you wish to buy something very small/lightweight, or need urgent delivery, please contact us for a postage quote, otherwise standard charges apply.

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