Backyard Aquaponics
A place to discuss aquaponics

just a few terms on the forums that i'm not exactly sure what they mean. Thanks!

BOD – Biological oxygen demand
BP – Barrelponics (see System Glossary)
CF – Compact fluoro
CF – Continuous Flow (see System Glossary)
CHIFT PIST - Constant Height In Fish Tank, Pump In Sump Tank
DFT - Deep Flow Technique (see System Glossary)
DI - Deionisation
DO – Dissolved oxygen
DOC – Dissolved organic compounds
DWC – Deep water culture (see System Glossary) also DFT - Deep Flow Technique
E&F – Ebb and flow (see System Glossary)
F&D – Flood and drain (see System Glossary)
FRC – Floating raft culture (see System Glossary)
GB – Grow beds (see System Glossary )
GH – General Hardness, caused by divalent metal ions, primarily calcium and magnesium. (see Water Hardness and Fish Health )
GH – Green house
HPS – High pressure sodium lighting
IBC – Industrial / International / Intermediate bulk container (see Hardware Glossary)
KH – Carbonate Hardness, due to carbonate / bicarbonate ions, and represents the main 'buffering capacity' of the water, i.e. its ability to resist pH changes. (see Water Hardness and Fish Health)
LC50 – Lethal Concentration 50 usually used for gases in air or in the case of fish concentration in water in ppm. The 50 represents a 50% mortality in test subjects.
LD50 – Lethal Dose 50 at which 50% of the test subjects died. Is usually stated in mg/kg body weight.
Meg/L - Millequivalents per litre
MH – Metal Halide lighting
NC - Normally Closed (refers to relay contacts) contacts closed when relay has no power applied to relay coil (eg 240v), opens when power on
NFT - Nutrient Film Technique (see System Glossary)
NH3 – Ammonia (see The Nitrogen Cycle & Nitrifying Bacteria Facts for a full description)
(And Ammonia - The Silent Killer )
NH4 – Ammonium, the ionized form of ammonia, which is occurs when the water is acidic. It is not as toxic to fish as ammonia, which is why aquariums that have acidic water do not have as many problems with the initial phase of the nitrogen cycle. Ammonium, the most important nitrogenous fertilizer for water plants, is essential for the breakdown of plant protein.
NO - Normal Output (refers to lighting)
NO - Normallly Open (refers to relay contacts) contacts open when relay has no power applied to relay coil (eg 240V), closes when power on
NO2 – Nitrite (see Nitrite and Fish Health for a full description)
NO3 – Nitrate (see Nitrite and Fish Health for a full description)
PC - Power Compact Lights
pH - acidity or alkalinity of a substance (see Fish Health and pH )
ppm – Parts per million
ppt - Parts per thousand (i.e. one gram per 1000g or 1Kg per 1000L)
RO - Reverse Osmosis
RSG - Really Smart Guy filter, discussed here
SG - Specific Gravity, meaning the salinity (salt) content of your water.
SHO - Super High Output (refers to lighting)
SOG - Sequentially Operated Growbed (contact Ellkaybee for more information)
TBPC - Tri-Based Pelletized Carbon
UGF – Under Gravel Filter
UPS - Uninterruptible Power Supply
UV – Ultra Violet
VHO - Very High Output (refers to lighting)

Hope this helps...

JT

Which ones.... or ALL of them....

Here is a section of the forum that might come in handy to you.
http://backyardaquaponics.com/forum/viewtopic.php?f=14&t=1275

An autosiphon is a siphon that will kick in to drain a tank or grow bed automatically once the appropriate level is reached and then hopefully stop draining once the bed or tank is almost empty of water so the flood and drain cycle can start all over again.

A sump is usually a tank that is lower down to allow gravity to drain water into it. Sumps are generally equipped with pumps to lift water back up to a fish tank or grow bed that is higher up.

CHIFT PIST stands for a particular type of system. Constant Height In Fish Tank, Pump In Sump Tank. This type of system has many advantages including the fish tank level does not fluctuate much and if the water from the fish tank filters through grow beds before returning to the sump tank, the pump can remain rather clean thus reducing maintenance a bit. There are some systems that have a pump drawing from the fish tank to feed the grow beds and an additional pump to bring water back from the sump tank to the fish tank, those system use two pumps instead of just one. The biggest drawback to the CHIFT PIST type of system is the need for a rather large sump tank and the space it requires (my personal onion is that the sump tank should be equal to the fish tank.)

great info, thx for explaining!

Another noob-kwesch please?
What is flashing?

The fish symptom kind of course

Its when a fish turns on its side near the bottom of the tank. High nitrite is usually the cause. Sea salt is used to counter the nitrite.

It's also, or more frequently, an indication of a parasitic infection... such as "Ich"...

Again salting is the remedy.... 1ppt to mitigate nitrite.... 3ppt to treat "Ich"