SouthwestMarines -
Providing the best marine aquariums and aquatic supplies in Bristol and the South West.
Keep your water at its best using top quality filtration systems, minerals or professional marine test kits.
Tel: 01454 633633


T.M.C Bio Calcium 511g

Contains calcium for corals and carbon dioxide for zooanthellea.


Contains all 70 trace elements found in natural seawater, including: strontium and iodine.


Maintain a calcium level of approximately 400ppm by regular dosing of bio calcium.

£11.00
(+ postage: £1.50)

T.M.C Bio Magnesium 450g

Contains a combination of magnesium and minerals to promote essential biochemical processes in the aquarium.


Magnesium for accelerated skeleton growth of corals and calcerous coralline algae.


Proper magnesium and calcium concentrations are important to a healthy reef enviroment.


You should not exceed concentrations of 1600ppm.

£11.00
(+ postage: £1.50)

T.M.C Pro Coral Mineral

Contains a concentrated supply of all 70 trace elements found in natural seawater. For colour intensity, health and growth of invertabrates.


Tropic marin pro coral mineral is a highly concentrated form of the 70 trace elements that are contained in tropic marin seasalt mixture.

£8.00
(+ postage: £1.50)

T.M.C Pro Coral Organic

Pro coral organic contains valuable protein components and minerals that stimulate the growth of leather corals, disc and crust anemone species.


These nature-like conditions help the animals to open better and to obviously thrive better.


Without nitrates and phosphates.

£10.00
(+ postage: £1.50)

T.M.C Pro Coral A- Elements

Contains anionic forms of trace elements bromine, flourine, iodine, molybdenum, selenium and vanadium, which are needed in small amounts by the aquarium inhabitants for active biological processes.


Together with pro coral k+ elements will supply a complete profile of the essential trace elements with only two solutions.

£10.00
(+ postage: £1.50)

T.M.C Pro Coral K+ Elements
Contains the essential cationic minerals in a carefully formulated solution utilizing proportions designed to replace depletion from the consumption of corals and invertabrates.
£10.00
(+ postage: £1.50)

T.M.C Immuvit

Fish in the aquaria are exposed to elevated risk of infection by pathogens, bacteria and germs resulting in the increased likelihood of disease tranmission.


Immuvit contains beta glucanes of brewers yeast in a concentrated form. The natural B-vitamins of spirulina and brewers yeast are an important contribution to the vitamin supply of the fish; they prevent disease that occur from nutritional deficiences and stimulate appetite and vitality.

£7.00
(+ postage: £1.00)

T.M.C Lipovit
High quality mixture of selected oils. Contains the polyunsaturated fatty acids of marine oils. Lipovit strengthens the immune system promotes fertility of fish, enhances spawning and colouration.
£10.00
(+ postage: £1.00)

T.M.C Expert Test Kit

This set contains all the tests necessary for a fast and accurate determination of the most important water quality parameters.


Knowing these values and the relationships between them makes it possible to carefully monitor the aquatic environment of your fish and invertabrates.

£36.00
(+ postage: £2.00)

T.M.C Magnesium and Calcium Test Kit
This set is consistent and accurate measurement of the exact magnesium and calcium concentrations in seawater.
£22.00
(+ postage: £1.50)

T.M.C Pro Coral Phyton
Pro coral phyton is a balanced phytoplankton substitute for all micro feeders in the marine aquarium.  A blend of high-grade algae supplies the animals with trace elements and high energy carbohydrates that can be found in the marine environment.
£5.10
(+ postage: £1.00)

T.M.C Pro Coral Zooton
Pro coral zooton is a balanced zooplankton substitute for stony corals in the marine aquarium. It consists mainly of selected marine ingredients and is rich in trace elements and minerals from the sea.
£5.10
(+ postage: £1.00)

T.M.C Triple Buffer 255g

Raises and balances pH


Boosts and stabilizes alkalinity


Adjusts trace elements level


No nitrates and no phosphates 

£11.00
(+ postage: £1.50)

T.M.C Bio Strontium 200g
A sufficient supply of strontium is as essential for the growth and well being of reef building corals as calcium. Both elements are supplied to the corals with the help of the zooanthellae (algae) that live symbiotically within them. Bio strontium creates a natural environment in the aquarium and delivers strontium and carbon dioxide in a natural , biologically-available ionically balanced formula.
£10.00
(+ postage: £1.50)

Salifert Coral Grower 500ml
Contains calcium, strontium and trace elements (except iodine) required for growth and multiplication by corals and the beautiful encrusting pink and red coralline algae.
£15.00
(+ postage: £2.00)

Salifert Natural Iodine 500ml
Corals require iodine as a de-toxifier, as a protection against u.v radiation and as a natural defense against many parasites.
£15.00
(+ postage: £2.00)

Salifert All In One 500ml
All in one makes the use of so called A and B calcium and alkalinity supplements unnecessary.  It contains almost everything required for growth by corals and the beautiful encrusting pink and red coralline algae.  All in one will increase the alkalinity (carbonate hardness), calcium, strontium, trace elements (except iodine) and amino acids concentrations. 
£21.00
(+ postage: £2.00)

Salifert Coral Calcium 500ml

Calcium is a major constituent of calcareous algae, skeletal needles of soft/leather corals. Calcium also fulfils many biological functions. These processes result in depletion of calcium.  Quite often a too low calcium concentration retards growth of corals and calcareous algae.


Natural seawater contains calcium concentrations of 420-450ppm.

£15.00
(+ postage: £2.00)

Salifert Coral Food 500ml
Coral food contains highly nutritional particles ranging in size from 5-150 micron and dissolved natural polymeric and monomeric nutrients.  When dosed according to the instructions corals will have sufficient food to thrive without polluting the water. The organic load caused by this supplement is comparable to what is found in pristine seawater.
£15.00
(+ postage: £2.00)

Salifert Magnesium Powder 250ml
A too low magnesium concentration (below 1300 mg/L) results in problems maintaining correct calcium and alkalinity levels. Correct alkalinity and calcium levels are beneficial for coral growth. This magnesium supplement is highly concentrated and will not only increase magnesium concentration but will also correct the ionic-imbalance. Once the magnesium concentration is between approx 1300 and 1500 mg/L use the liquid magnesium supplement to maintain the magnesium concentration.
£21.00
(+ postage: £1.50)

Marine Snow 500ml
Marine snow is a plankton like food for filter feeding marine invertabrates. This first of its kind product reproduces thr special biogenic suspended particle matter found in natural seawater.
£18.00
(+ postage: £2.00)

Aqua Medic Reef Life Strontium 250ml
Reef life strontium contains strontium ions in a form which can easily assimilated by all invertabrates. Strontium is essential for the building of exoskeletons in hard corals, shell development for mussels and growth in calcerous algae. 
£11.00
(+ postage: £1.50)

Aqua Medic Reef Life KH Buffer 1kg
Reef life kh buffer is a supplement to replenish the carbonate buffer in reef aquariums to stabilise the carbonate hardness (alkalinity).
£16.00
(+ postage: £5.00)

Aqua Medic Anti Phos Fe Small
Anti phos fe is an ideal medium for selectively extracting phosphate from aquarium water, thus counteracting unwanted algal growth. This is a highly active iron based product containing no aluminium and is completely non toxic to aquarium plants and animals.
£21.20
(+ postage: £1.50)

Aqua Medic Anti Phos Fe Large

Anti phos fe is an ideal medium for selectively extracting phosphate from the aquarium water, thus counteracting unwanted algal growth. This is a highly active iron based product containing no aluminium and is completely non toxic to aquarium plants and animals.

£36.00
(+ postage: £2.50)

Aqua Medic Sulphur Pearls 1kg

Filter medium for sulphur reactors.


Sulphur beads are formed from pure sulphur. They are used in sulphur nitrate reactors as the filter medium and energy source for the bacteria. They have to be replaced from time to time as they are slowly consumed by the bacteria.

£13.36
(+ postage: £1.50)

Aqua Medic Carbolit 1.5mm 500g
Carbolit is a highly efficient activated carbon manufactured in pellet form. It quickly cleans up aquarium water, removing colouring substances, turbidity and medication residues. Yellowing substances that may accumalate in the water are also removed. 
£7.24
(+ postage: £2.00)

Make payments with PayPal - it's fast, free and secure!