USA vrs. GERMANY vrs. REST WORLD


*INTERNATIONAL SURVEY ON REEF AQUARISTIC*	USA	GERMANY	REST WORLD

*USA vrs. GERMANY vrs. REST WORLD*	n=297	n = 155	n = 231

All numbers in %


#1 A SEX
male	91	96	94
female	9	4	5

#1 B AGE
0-9 years	0	0	0
10-19 years	5	1	2
20-29 years	32	11	20
30-39 years	39	41	40
40-49 years	19	21	20
50-59 years	3	14	8
60-69 years	0	5	2
>70 years	0	1	0

#2 I have been an aquarist for years...
0-1 year	7	3	6
1-3 years	12	3	12
4-6 years	19	7	14
7-10 years	21	11	18
>10 years	41	76	50

#3 I have been a marine aquarist for *** years…*
0-1 year	19	8	16
1-3 years	24	14	23
4-6 years	21	21	20
7-10 years	19	17	19
>10 years	20	39	21

#4 I was motivated to try marine aquaria be cause I…	USA	GERMANY	REST WORLD
Was impressed by anothers aquarium	23	43	32
Read about the natural coral reef	9	23	7
Read about the coral reef aquarium	8	27	13
Saw an impressive aquarium in a pet shop	30	7	23
I am especially interested in reef biology and/or in biology in general	22	43	25
Visited a coral reef	9	16	10
Other causes	14	23	12

#5 My main interest in marine aquaristic is
Stony corals	22	21	17
Other cnidaria	3	50	26
Invertebrates in general	61	50	51
Fishes	21	57	36
Other organisms	2	10	4
The technique only	2	15	9

#6 I now have *** marine aquaria*
1 aquarium	48	58	74
2 to 3 aquaria	38	32	20
4 to 10 aquaria	9	7	4
More than 10 aquaria	4	3	0

#7 My aquarium contains *** liters of water including the filter volume*
<100 liters	7	1	6
101-200 liters	22	3	10
201-500 liters	46	37	40
501-1000 liters	18	39	34
>1000 liters	4	19	10

#8 My main aquarium has been in operation for years	USA	GERMANY	REST WORLD
<=1 year	41	18	31
1-2 years	26	21	19
2-5 years	24	37	34
>5 years	9	23	15

#9 My main aquarium was bought a a finished tank or I made it myself…
bought as a complete aquarium	66	66	57
made it myself	34	34	44

#10 My main aquarium must be classified as…
a mixed show aquarium with a variety of invertebrates and fishes	62	76	70
an aquarium where the fishes dominate	8	2	8
an aquarium for clown fishes and host sea anemones	2	3	1
a stony coral aquarium	15	18	13
a soft corals aquarium	8	10	8
a special aquarium	5	0	2

#11 I have *** animals that I cannot identify*
a lot of	3	0	5
some	15	7	16
few	26	15	21
almost none	55	74	57

#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	0
1	0	1	2
2	5	6	5
3	23	37	32
4	51	42	45
5	21	12	13

#13 The biggest problem I have had with my aquarium has been linked to…	USA	GERMANY	REST WORLD
algae	32	31	40
technique	7	4	5
lack of knowledge about the organisms	13	7	10
water chemistry	20	24	25
other topics	28	30	19

#14 I am a regular reader of an aquarium magazine…
yes	83	76	71
no	17	25	28

#15 I read most about…
technique	59	65	56
the biology of reef organisms	40	78	53
other topics	3	17	9
I mostly view the pictures only	1	3	8

#16 Prior to starting my aquarium I read…
a lot	56	61	55
some	26	30	27
little	10	7	6
almost nothing	7	3	10

#17 I am a member of an aquarium club ?
yes	28	50	51
no	71	50	48

#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	32	55	30
of minor importance	31	8	12
not important at all	23	6	4

#19 I have dived on a coral reef ?	USA	GERMANY	REST WORLD
yes	55	46	52
no	47	54	47

#20 My filter technique is at first hand based on…
undergravel filter	5	7	5
external biological filter	20	39	35
protein skimming	88	96	89
carbon filter	19	19	22
mechanical filtration	16	36	35
ozone	2	21	6
UV	6	14	11
others	14	5	8
I use no filters at all	2	1	0

#21 I addition I occasionally use…
undergravel filter	0	3	2
external biological filter	3	14	7
protein skimming	4	7	6
carbon filter	42	7	29
mechanical filtration	16	23	25
ozone	3	19	4
UV	4	12	11
others	8	5	8

#22 For adding calcium I use…
no adding	10	7	13
"kalkwasser"	54	51	52
"kalkwasser" with CO2	1	3	3
"kalkwasser" with CO2 and pH control	2	2	5
carbon reactor with calcareous material and CO2-adding	6	23	11
carbon reactor with calcareous material, CO2-adding and pH control	6	21	9
other type of calcium adding	41	14	17

#23 I use the method from #22…	USA	GERMANY	REST WORLD
regularly or continuously	78	79	74
only now and then	11	14	12

#24 I use *** l/h as internal circulation* A
fixed	48	59	51
variable	37	33	38
B
0-1 times the aquarium volume	4	3	3
1-2 times the aquarium volume	7	8	8
2-3 times the aquarium volume	6	4	6
3-5 times the aquarium volume	14	20	13
5-7 times the aquarium volume	10	14	10
7-15 times the aquarium volume	21	38	38
>15 times the aquarium volume	10	6	9

#25 My main illumination is...
light tubes	52	32	42
metal hallide lamps	48	81	63
other kind of illumination	4	5	3

#26 In addition I use…
blue actinic light tubes	75	83	73
other kind of light tubes	12	7	11
moonlight	7	28	13

#27 My main illumination is equal to about *** Watt per liter aquarium volume*
<1 W	10	59	43
1-2 W	45	27	29
2-3 W	10	1	4
3-4 W	8	1	2
>4 W	10	0	3

#28 I follow these parameters electronically on a continuous basis…
pH	45	56	43
temperature	60	55	48
redox potential	18	36	13
salinity	16	30	18
others	38	6	17
none	3	1	3

#29 I measure the following parameters now and then…
pH	56	43	48
temperature	44	41	40
redox	7	7	3
salinity	76	65	69
calcium	69	72	65
nitrate	79	78	78
nitrite	42	53	52
phosphate	55	57	58
others	38	32	29

#30 The following parameters are those that I find hardest to regulate to an acceptable level…
temperature	16	4	14
redox	3	7	6
salinity	2	1	3
calcium	23	16	20
nitrate	10	19	19
nitrite	2	4	3
phosphate	11	19	21
others	12	16	11
I don't know	10	17	13

#31 My decoration is mainly composed of…
live rocks	89	79	89
calcareous rocks or other type of rocks	14	50	22
artificial material	2	1	3
dead coral skeletons	6	7	8

#32 Amount of live rock in relation to the aquarium volume…
< 0.1 kg/l	16	50	31
0.1-0.2 kg/l	38	28	40
0.2-0.3 kg/l	11	10	13
0.3-0.4 kg/l	7	3	3
0.4-0.5 kg/l	5	1	1
>0.5 kg/l	9	1	2

#33 When I decorated the aquarium I concentrated on…
making an artistic decoration	32	34	35
to copy a natural habitat designed for the animals that i wanted to keep	56	83	63
to copy another's aquarium decoration	5	1	1
to make a decoration that could house as many corals as possible	19	16	16

#34 I am pleased with the decoration as it is now ?
yes	75	85	77
no	23	14	21

#35 I regularly have to adjust and/or rebuild the decoration and/or the corals ?
yes	14	4	13
no	83	94	82

#36 A On a daily basis I spend *** maintaining my aquarium…*
<1 hour	65	71	63
1-2 hours	29	19	29
>2 hours	3	9	6

#36 B	USA	GERMANY	REST WORLD
*Of the time given in #36A I spend about % studying the organisms and % working with the technique*
Studying the organisms:
0-24%	7	5	6
25-50%	22	21	24
51-75%	29	23	24
76-100%	34	41	34
Working with the technique:
0-24%	34	41	34
25-50%	29	23	24
51-75%	22	21	24
76-100%	7	5	6

#37 When I had completed the decoration I introduced the first corals (stony and/or soft) after…
1-7 days	14	6	9
1-2 weeks	8	6	6
2-4 weeks	13	14	11
1-2 months	24	27	27
2-4 months	19	31	27
>4 months	10	14	13

#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	0	1	1
1	0	1	4
2	2	7	2
3	12	23	26
4	26	41	27
5	53	27	36

#39 The advises I get in my pet shop are in general…
very trustfull	15	28	20
moderately trustfull	44	45	43
little trustfull	22	21	24
not trustfull at all	15	2	9
#40	USA	GERMANY	REST WORLD
*My pet shop informs me on the "cyanide-catching-problem"…*
never	64	50	56
sometimes	21	28	28
regularly	9	12	7
I have not heard about fishes being caught with cyanide	2	3	4

#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	5	8
false	62	76	68
don't know	24	12	19

#42 My pet shop advised me to wait several weeks and observed how the aquarium behaved after completing the set up before I added any corals (soft or stony)…
true	49	72	59
false	16	9	16
don't know	26	10	19

#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	14	21	18
to solve the problem by adding additives and/or buying new and better equipment	31	25	32
to use the present technical equipment in a better way and/or to wait and observe	23	25	21
I don't know what they will say	27	22	27

#44 I have about *** colonies of corals in my aquarium* Colonies per. liter aquarium volume
<0.05	47	70	54
0.06-0.10	17	18	15
0.11-0.15	6	2	3
0.16-0.20	1	0	3
>0.20	3	1	1

#45	USA	GERMANY	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	21	5	13
1-10%	20	18	21
11-20%	10	16	12
21-30%	10	14	10
31-40%	2	8	4
41-50%	5	7	3
>50%	6	15	6

#46 Stony corals compose about *** % of all my corals…*
none	10	8	5
1-10%	10	22	15
11-20%	7	14	11
21-30%	8	10	8
31-40%	4	4	5
41-50%	12	5	6
51-60%	3	3	4
61-70%	3	5	4
71-80%	8	3	6
81-90%	5	5	4
91-100%	4	5	5

#47 I have regular access to coral that have been grown in coral farms ?
yes	27	7	8
no	49	76	68

#48	CANCELLED

#49	USA	GERMANY	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	67	74	70
no	8	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 were cheaper than wild caught corals ?
yes	14	49	32
no	60	32	46

#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	29	17	20
no	46	64	56

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

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