(put title here)

*INTERNATIONAL SURVEY ON REEF AQUARISTIC*	EUROPE	REST WORLD

*EUROPE vrs. REST WORLD*	n = 325	n = 358

All numbers in %



#1 A
*SEX*
male	95	91
female	4	8
#1 B
*AGE*
0-9 years	0	0
10-19 years	1	5
20-29 years	13	32
30-39 years	41	39
40-49 years	21	18
50-59 years	11	3
60-69 years	3	0
>70 years	1	0

#2
*I have been an aquarist for years...*
0-1 year	4	8
1-3 years	6	14
4-6 years	10	18
7-10 years	15	20
>10 years	66	40

#3
*I have been a marine aquarist for years…*
0-1 year	11	20
1-3 years	18	24
4-6 years	20	21
7-10 years	18	19
>10 years	32	18

#4	EUROPE	REST WORLD
*I was motivated to try marine aquaria be cause I…*
Was impressed by anothers aquarium	41	21
Read about the natural coral reef	16	7
Read about the coral reef aquarium	20	8
Saw an impressive aquarium in a pet shop	14	30
I am especally interested in reef biology and/or in biology in general	43	23
Visited a coral reef	13	9
Other causes	18	13

#5
*My main interest in marine aquaristic is*
Stony corals	19	20
Other cnidaria	41	4
Invertebrates in general	50	59
Fishes	46	24
Other organisms	7	2
The technique only	14	2
#6 A33
*I now have marine aquaria*
1 aquarium	70	50
2 to 3 aquaria	24	37
4 to 10 aquaria	5	9
More than 10 aquaria	1	3

#7
*My aquarium contains liters of water including the filter volume*
<100 liters	2	8
101-200 liters	5	22
201-500 liters	38	46
501-1000 liters	40	18
>1000 liters	15	5

#8	EUROPE	REST WORLD
*My main aquarium has been in operation for years*
<=1 year	23	41
1-2 years	20	25
2-5 years	35	26
>5 years	21	9

#9
*My main aquarium was bought a a finished tank or I made it myself…*
bought as a complete aquarium	61	63
made it myself	38	37

#10
*My main aquarium must be classified as…*
a mixed show aquarium with a vireity of invertebrates and fishes	75	61
an aquarium where the fishes dominate	3	9
an aquarium for clown fishes and host sea anemones	2	2
a stony coral aquarium	16	15
a soft corals aquarium	10	8
a special aquarium	1	5

#11
*I have animals that I cannot identify*
a lot of	2	4
some	11	16
few	17	27
almost none	68	52
#12
*On a scale from 5 (best) to 0 (worst) I would say that my success with reef aquarium so far has been…*
0	0	0
1	1	1
2	5	6
3	34	24
4	46	48
5	10	21
	EUROPE	REST WORLD
#13
*The biggest problem I have had with my aquarium has been linked to…*
algae	37	33
technique	5	7
lack of knowledge about the organisms	9	13
water chemistry	24	21
other topics	23	27

#14
*I am a regular reader of an aquarium magazine…*
yes	74	59
no	26	40

#15
*I read most about…*
technique	59	59
the biology of reef organisms	67	40
other topics	14	3
I mostly view the pictures only	6	2

#16
*Prior to starting my aquarium I read…*
a lot	59	54
some	28	26
little	6	9
almost nothing	6	9
#17
*I am a member of an aquarium club ?*
yes	55	28
no	45	71

#18
*My membership in the club is for developing the skills needed for the hobby*
*(ANSWERS FROM THOSE WHO HAVE ANSWERED "yes" IN # 17 ONLY)* very important	74	43
of minor importance	20	32
not important at all	6	26
#19	EUROPE	REST WORLD
*I have dived on a coral reef ?*
yes	48	56
no	52	45

#20
*My filter technique is at first hand based on…*
undergravle filter	5	6
external biological filter	36	23
proteinskimming	94	86
carbon filter	20	20
mechanical filtration	36	18
ozone	13	3
UV	14	6
others	6	13
I use no filters at all	1	2

#21
*I addition I occasionally use…*
undergravle filter	2	1
external biological filter	10	4
proteinskimming	7	4
carbon filter	17	41
mechanical filtration	25	16
ozone	12	3
UV	12	5
others	7	8

#22
*For adding calcium I use…*
no adding	10	11
"kalkwasser"	51	54
"kalkwasser" with CO2	3	1
"kalkwasser" with CO2 and pH control	4	2
carbon reactor with calcareous material and CO2-adding	18	6
carbon reactor with calcareous material, CO2-adding and pH control	16	6
other type of calcium adding	14	38

#23	EUROPE	REST WORLD
*I use the method from #22…*
regularly or continiously	78	77
only now and then	13	11

#24A/B
*I use l/h as internal circulation*
fixed	55	49
variabel	37	36

0-1 times the aquarium volume	2	4
1-2 times the aquarium volume	6	9
2-3 times the aquarium volume	4	7
3-5 times the aquarium volume	17	13
5-7 times the aquarium volume	11	11
7-15 times the aquarium volume	42	20
>15 times the aquarium volume	9	9
#25
*My main illumination is...*
light tubes	35	52
metall hallide lamps	74	48
other kind of illumination	5	3

#26
*In addition I use…*
blue actinic light tubes	77	75
other kind of light tubes	10	12
moonlight	21	7

#27
*My main illumination is equal to about Watt per liter aquarium volume*
<1 W	55	12
1-2 W	26	44
2-3 W	3	9
3-4 W	1	8
>4 W	1	9

#28	EUROPE	REST WORLD
*I follow these parametres electronically on a continious basis…*
pH	50	44
temperature	52	58
redox potential	23	18
salinity	22	17
others	8	37
none	2	2
#29
*I measure the following parametres now and then…*
pH	46	54
temperature	39	44
redox	5	6
salinity	68	75
calcium	69	67
nitrate	79	78
nitrite	53	44
phosphate	59	54
others	30	37

#30
*The following parametres are those that I find hardest to regulate to an acceptable level…*
temperature	9	16
redox	6	4
salinity	2	3
calcium	20	20
nitrate	20	12
nitrite	4	2
phosphate	20	13
others	14	11
I don't know	16	9

#31
*My decoration is mainly composed of…*
live rocks	86	88
calcareous rocks or other type of rocks	35	15
artificial material	2	2
dead coral skeletons	6	8

#32	EUROPE	REST WORLD
*Amount of live rock in relation to the aquarium volume…*
<0,1 kg/l	41	18
0,1-0,2 kg/l	36	38
0,2-0,3 kg/l	12	11
0,3-0,4 kg/l	3	6
0,4-0,5 kg/l	1	4
>0,5 kg/l	1	9

#33
*When I decorated the aquarium I consentrated on…*
making an artistic decoration	36	32
to copy a natural habitat designed for the animals that i wanted to keep	74	55
to copy another's aquarium decoration	1	5
to make a decoration that could house as many corals as possible	16	18


#34
*I am pleased with the decoration as it is now ?*
yes	82	74
no	17	23

#35
*I regulary have to adjust and/or rebuild the decoration and/or the corals ?*
yes	6	16
no	90	81

#36 A
*On a daily basis I spend maintaining my aquarium…*
<1 hour	70	61
1-2 hours	23	30
>2 hours	6	5

#36 B	EUROPE	REST WORLD
*Of the time given in #36A I spend about % studying the organisms and % working with the technique*
Studying the organisms: 0-24%	4	8
25-50%	24	21
51-75%	23	28
76-100%	38	34

Working with the technique: 0-24%	38	34
25-50%	23	28
51-75%	24	21
76-100%	4	8

#37
*When I had completed the decoration I introduced the first corals (stony and/or soft) after…*
1-7 days	7	14
1-2 weeks	5	9
2-4 weeks	12	13
1-2 months	28	24
2-4 months	32	18
>4 months	13	11

#38
*On a scale from 5 (best) to 0 (worst) I would say that practicing the reef hobby*
*has in general increased my knowledge in biology…*
0	1	0
1	3	0
2	5	2
3	26	13
4	35	25
5	29	53

#39
*The advises I get in my pet shop are in general…*
very trustfull	25	15
moderately trustfull	44	44
little trustfull	22	23
not trustfull at all	6	14
#40	EUROPE	REST WORLD
*My pet shop informs me on the "cyanid-catching-problem"…*
never	53	63
sometimes	29	21
regulary	9	9
I have not heard about fishes being caught with cyanide	4	3


#41
*My pet shop advised me to add corals (soft- or stony) to the aquarium as soon as possible after completing the set-up ?*
true	6	7
false	75	60
don't know	14	25

#42
*My pet shop advised me to wait several weeksand observed how the aquarium behaved after completing the set up*
*before I added any corals (soft or stony)…*
true	68	49
false	13	16
don't know	14	26

#43
*If I have a biological problem with my aquarium, my pet shop advises me to…*
read about relevant literature and collect more information before suggesting a solution	20	15
to solve the problem by adding additives and/or buying new and better equipment	30	31
to use the present technical equipment in a better way and/or to wait and observe	24	21
I don't know what they will say	24	27

#44
*I have about colonies of corals in my aquarium*
Colonier per. liter aquarium volume <0,05	62	45
0,06-0,10	17	16
0,11-0,15	2	6
0,16-0,20	1	1
>0,20	1	2

#45	EUROPE	REST WORLD
*Of the number given in #44 about % come from off springs that I have got from fellow aquarists or*
*from mother colonies in my own aquarium….*
none	9	20
1-10%	19	21
11-20%	15	9
21-30%	13	9
31-40%	6	2
41-50%	6	4
>50%	11	5

#46
*Stony corals compose about % of all my corals…*
none	6	9
1-10%	20	9
11-20%	13	7
21-30%	10	7
31-40%	4	4
41-50%	5	11
51-60%	4	3
61-70%	6	2
71-80%	4	9
81-90%	4	6
91-100%	5	4

#47
*I have regular acess to coral that have been grown in coral farms ?*
yes	9	23
no	74	51

#48
CANCELLED




#49	EUROPE	REST WORLD
*If corals grown in coral farms were available in my pet shop, I would definitely have preferred these*
*to wild caught corals ?*
yes	74	66
no	10	7

#50
*If corals grown in coral farms were available in my pet shop, I would definitely have preferred these*
*to wild caught corals, but only if they werecheaper than wild caught corals ?*
yes	42	15
no	40	58

#51
*If corals grown in coral farms were available in my pet shop, I would definitely have preferred these*
*to wild caught corals, but only if they were more colourful than wild caught corals ?*
yes	18	28
no	63	45

Created by liquid
Last modified 2005-02-03 06:18

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