(put title here)

*INTERNATIONAL SURVEY ON REEF AQUARISTIC*	GERMANY	REST WORLD

*GERMANY vrs. REST WORLD*	n = 155	n = 528

All numbers in %



#1 A
*SEX*
male	96	92
female	4	7
#1 B
*AGE*
0-9 years	0	0
10-19 years	1	4
20-29 years	11	27
30-39 years	41	39
40-49 years	21	19
50-59 years	14	5
60-69 years	5	1
>70 years	1	0

#2
*I have been an aquarist for years...*
0-1 year	3	7
1-3 years	3	12
4-6 years	7	17
7-10 years	11	19
>10 years	76	45

#3
*I have been a marine aquarist for years…*
0-1 year	8	18
1-3 years	14	23
4-6 years	21	20
7-10 years	17	19
>10 years	39	20

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

#5
*My main interest in marine aquaristic is*
Stony corals	21	20
Other cnidaria	50	13
Invertebrates in general	50	56
Fishes	57	28
Other organisms	10	3
The technique only	15	5
#6 A33
*I now have marine aquaria*
1 aquarium	58	59
2 to 3 aquaria	32	30
4 to 10 aquaria	7	7
More than 10 aquaria	3	2

#7
*My aquarium contains liters of water including the filter volume*
<100 liters	1	7
101-200 liters	3	17
201-500 liters	37	44
501-1000 liters	39	25
>1000 liters	19	7

#8	GERMANY	REST WORLD
*My main aquarium has been in operation for years*
<=1 year	18	37
1-2 years	21	23
2-5 years	37	28
>5 years	23	12

#9
*My main aquarium was bought a a finished tank or I made it myself…*
bought as a complete aquarium	66	62
made it myself	34	38

#10
*My main aquarium must be classified as…*
a mixed show aquarium with a vireity of invertebrates and fishes	76	65
an aquarium where the fishes dominate	2	8
an aquarium for clown fishes and host sea anemones	3	2
a stony coral aquarium	18	14
a soft corals aquarium	10	8
a special aquarium	0	4

#11
*I have animals that I cannot identify*
a lot of	0	4
some	7	16
few	15	24
almost none	74	56
#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	6	5
3	37	27
4	42	48
5	12	17
	GERMANY	REST WORLD
#13
*The biggest problem I have had with my aquarium has been linked to…*
algae	31	36
technique	4	6
lack of knowledge about the organisms	7	12
water chemistry	24	22
other topics	30	24

#14
*I am a regular reader of an aquarium magazine…*
yes	76	77
no	25	22

#15
*I read most about…*
technique	65	57
the biology of reef organisms	78	46
other topics	17	6
I mostly view the pictures only	3	4

#16
*Prior to starting my aquarium I read…*
a lot	61	55
some	30	26
little	7	8
almost nothing	3	9
#17
*I am a member of an aquarium club ?*
yes	50	38
no	50	61

#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	34	52
of minor importance	5	31
not important at all	4	16
#19	GERMANY	REST WORLD
*I have dived on a coral reef ?*
yes	46	54
no	54	47

#20
*My filter technique is at first hand based on…*
undergravle filter	7	5
external biological filter	39	27
proteinskimming	96	88
carbon filter	19	20
mechanical filtration	36	24
ozone	21	4
UV	14	8
others	5	11
I use no filters at all	1	1

#21
*I addition I occasionally use…*
undergravle filter	3	1
external biological filter	14	5
proteinskimming	7	5
carbon filter	7	36
mechanical filtration	23	20
ozone	19	3
UV	12	7
others	5	8

#22
*For adding calcium I use…*
no adding	7	12
"kalkwasser"	51	53
"kalkwasser" with CO2	3	2
"kalkwasser" with CO2 and pH control	2	3
carbon reactor with calcareous material and CO2-adding	23	9
carbon reactor with calcareous material, CO2-adding and pH control	21	7
other type of calcium adding	14	31

#23	GERMANY	REST WORLD
*I use the method from #22…*
regularly or continiously	79	77
only now and then	14	11

#24A/B
*I use l/h as internal circulation*
fixed	59	49
variabel	33	38

0-1 times the aquarium volume	3	4
1-2 times the aquarium volume	8	8
2-3 times the aquarium volume	4	6
3-5 times the aquarium volume	20	13
5-7 times the aquarium volume	14	10
7-15 times the aquarium volume	38	28
>15 times the aquarium volume	6	9
#25
*My main illumination is...*
light tubes	32	48
metall hallide lamps	81	54
other kind of illumination	5	4

#26
*In addition I use…*
blue actinic light tubes	83	74
other kind of light tubes	7	12
moonlight	28	9

#27
*My main illumination is equal to about Watt per liter aquarium volume*
<1 W	59	24
1-2 W	27	38
2-3 W	1	7
3-4 W	1	6
>4 W	0	7

#28	GERMANY	REST WORLD
*I follow these parametres electronically on a continious basis…*
pH	56	44
temperature	55	56
redox potential	36	16
salinity	30	17
others	6	29
none	1	3
#29
*I measure the following parametres now and then…*
pH	43	52
temperature	41	42
redox	7	5
salinity	65	74
calcium	72	67
nitrate	78	79
nitrite	53	47
phosphate	57	56
others	32	34

#30
*The following parametres are those that I find hardest to regulate to an acceptable level…*
temperature	4	16
redox	7	4
salinity	1	3
calcium	16	22
nitrate	19	14
nitrite	4	2
phosphate	19	16
others	16	12
I don't know	17	11

#31
*My decoration is mainly composed of…*
live rocks	79	89
calcareous rocks or other type of rocks	50	18
artificial material	1	2
dead coral skeletons	7	7

#32	GERMANY	REST WORLD
*Amount of live rock in relation to the aquarium volume…*
<0,1 kg/l	50	23
0,1-0,2 kg/l	28	39
0,2-0,3 kg/l	10	12
0,3-0,4 kg/l	3	5
0,4-0,5 kg/l	1	3
>0,5 kg/l	1	6

#33
*When I decorated the aquarium I consentrated on…*
making an artistic decoration	34	34
to copy a natural habitat designed for the animals that i wanted to keep	83	59
to copy another's aquarium decoration	1	3
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	85	76
no	14	22

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

#36 A
*On a daily basis I spend maintaining my aquarium…*
<1 hour	71	64
1-2 hours	19	29
>2 hours	9	4

#36 B	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%	5	7
25-50%	21	23
51-75%	23	27
76-100%	41	34

Working with the technique: 0-24%	41	34
25-50%	23	27
51-75%	21	23
76-100%	5	7

#37
*When I had completed the decoration I introduced the first corals (stony and/or soft) after…*
1-7 days	6	12
1-2 weeks	6	7
2-4 weeks	14	12
1-2 months	27	26
2-4 months	31	23
>4 months	14	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	1	2
2	7	2
3	23	18
4	41	26
5	27	46

#39
*The advises I get in my pet shop are in general…*
very trustfull	28	17
moderately trustfull	45	44
little trustfull	21	23
not trustfull at all	2	13
#40	GERMANY	REST WORLD
*My pet shop informs me on the "cyanid-catching-problem"…*
never	50	61
sometimes	28	24
regulary	12	9
I have not heard about fishes being caught with cyanide	3	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	5	7
false	76	65
don't know	12	22

#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	72	54
false	9	16
don't know	10	23

#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	21	16
to solve the problem by adding additives and/or buying new and better equipment	25	32
to use the present technical equipment in a better way and/or to wait and observe	25	22
I don't know what they will say	22	27

#44
*I have about colonies of corals in my aquarium*
Colonier per. liter aquarium volume <0,05	70	50
0,06-0,10	18	16
0,11-0,15	2	5
0,16-0,20	0	2
>0,20	1	2

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

#46
*Stony corals compose about % of all my corals…*
none	8	8
1-10%	22	12
11-20%	14	9
21-30%	10	8
31-40%	4	5
41-50%	5	9
51-60%	3	4
61-70%	5	3
71-80%	3	7
81-90%	5	5
91-100%	5	5

#47
*I have regular acess to coral that have been grown in coral farms ?*
yes	7	19
no	76	57

#48
CANCELLED




#49	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	74	68
no	10	8

#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	49	22
no	32	55

#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	17	25
no	64	51

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

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