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Old 11-21-2012, 10:54 PM #1
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Discutie avantaje/dezavantaje led (Split from Stealth cabinet 250w HPS)

ba fratilor....pentru dimensiunea asta se merita ledul,dar pentru 1m2 cam e inca batuta pe departe la fund tehnologia asta sincernu?
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Old 11-21-2012, 11:24 PM #2
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cred ca tine de buget si de amortizarea in timp. pentru 1-2 growuri nu merita ledurile, dar pentru un set-up ce il vei folosi cativa ani, merita.

si uitasem sa spun.. 120w led nu inlocuieste 400w oricum ai da-o, dar 150w sau chiar putin mai mult, cu siguranta.
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Old 11-21-2012, 11:25 PM #3
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Bine...eu acum postez aiurea pe threadul omului sa fac posturi sa pot intra si eu pe chat intro buna zi sincer,dar vorbind serios am pus sub 120 de led o data(care cica e echivalentul a 400 de hid). si da...E posibil sa fie fumatori care poata supravietui cu atat,dar asta nu inseamna ca nu exista si fumatori adevarati pe undeva in lume carora nu le'ar ajunge cantitatea de sub led ...si iarasi polemica...In state civilizate vest europene e scumpa tare energia electrica(mi se pare) si ar fi convenabil sa creasca sub led,dar e(era) scump si ansamblul LED de cumparat + ca si iese putin material si astia fumeaza ca turcii.La bun si putin nu s'ar putea bucura decat un roman ...care in orice caz nu prea poate fuma oricand,oricum.Deci...la leduri ostenii mei (dar improvizate) ca un panou compact e muuuult prea sucump:(
In final eu o sa vegetez sub panou led si o sa'l las pe hps sa faca asa cum face el

acum editez...si zic ca trebuia sa rad la faza cu chatul,unu,doi ii dau dreptate lui explo(tot timpul) si 3 ..cand pupaza din tei o sa pot intra pe chat?
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Last edited by exploziv; 11-21-2012 at 11:39 PM.. Reason: merged 2 posts.
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Old 11-21-2012, 11:38 PM #4
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Old 11-22-2012, 08:19 AM #5
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Originally Posted by cmnbs View Post
Bine...eu acum postez aiurea pe threadul omului sa fac posturi sa pot intra si eu pe chat intro buna zi sincer,dar vorbind serios am pus sub 120 de led o data(care cica e echivalentul a 400 de hid). si da...E posibil sa fie fumatori care poata supravietui cu atat,dar asta nu inseamna ca nu exista si fumatori adevarati pe undeva in lume carora nu le'ar ajunge cantitatea de sub led ...si iarasi polemica...In state civilizate vest europene e scumpa tare energia electrica(mi se pare) si ar fi convenabil sa creasca sub led,dar e(era) scump si ansamblul LED de cumparat + ca si iese putin material si astia fumeaza ca turcii.La bun si putin nu s'ar putea bucura decat un roman ...care in orice caz nu prea poate fuma oricand,oricum.Deci...la leduri ostenii mei (dar improvizate) ca un panou compact e muuuult prea sucump:(
In final eu o sa vegetez sub panou led si o sa'l las pe hps sa faca asa cum face el

acum editez...si zic ca trebuia sa rad la faza cu chatul,unu,doi ii dau dreptate lui explo(tot timpul) si 3 ..cand pupaza din tei o sa pot intra pe chat?
Cand e vorba de lumina nu trebuie sa masuram watti consumati ci eventual numarul de lumeni teoretici/practici emisi de sursa de lumina si mai ales cantitatea de lumina incidenta pe coronament, exprimata in moli.

La asta se mai adauga si componenta spectala a respectivei surse de lumina.

120W de LED echivalent cu 400W ? Posibil, probabil doar teoretic, atunci cand lumina este adaptata TOTAL cerintelor unui anumit strain.

Avantajele cat si dezavantajele LEDurilor au fost si vor fi dezbatute mult timp de acum incolo, dar nu mi se pare firesc sa spuneam ca anume sursa de lumina e mai buna.

Personal urasc HPS-ul si faptul ca am avut rezultate bune cu ledurile (dar si cu cumbinatii LED+CFL) ma face sa le promovez pe cele din urma, in special pentru usurinta exploatarii lor si riscurile reduse de electrocutare si incendiu, deci nu poate fi vorba de subiectivitate.

Actuala mea suprafata de grow are fix 1m2 si este luminata in intregime de LEDuri (282W, urmand sa suplimentez lateralele cu 50W lumina alba calda , produsa de leduri de 10W), iar lumina este extrem de puternica. In plus, avand posibilitatea de a controla componenta spectrala, am determinat distante intre inter-noduri de 3-4mm !!! La nici 12cm deasupra 'solului' (hidrotonului, mai precis) , plantutele mele deja au 10 perechi de ramuri.

Intradevar in configuratie standard, panourile de leduri nu sunt foarte eficiente pentru cresterea plantelor fara training suplimentar (LST, SCROG,etc) intrucat puterea de penetrare este mica (acest lucru datorandu-se faptului ca lumina nu este generata intr-un singur punct spre deosebire de HPS-uri) insa efectul de umbrire este mult redus (apare insa fenomenul de multi-shading).

Fiecare grower in parte este liber sa aiba propriile preferinte in ceea ce priveste conditiile de grow, dar ar fi frumos sa-i lasam sa vorbeasca mai intai pe cei care au ceva concret de spus, vorbind din experienta si nu din auzite. Daca in ultimii ani LEDurile m-ar fi dezamagit cu siguranta as fi renuntat la ele, dar nu a fost cazul, ba dimpotriva.

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Old 11-22-2012, 12:27 PM #6
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cmnbs despre ce cantitati vorbim?
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Old 11-22-2012, 08:54 PM #7
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cmnbs despre ce cantitati vorbim?
tie probabil o sa'ti ajunga...lui marian sigur nu
la 100 de wati de led probabil aprox 50 dar doar cu taining,cum zice hemp.hemp ai dreptate pe jumate si stii la ce ma refer:P
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Old 11-22-2012, 09:25 PM #8
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Pai la inceput, chiar si cu HID, nu ar trebui sa te astepti la mai mult de 0,5 g/W...
Dupa ce "cunosti" un strain anume pana la detalii, ii faci training (atat LST cat si HST), experimentezi cu nutrientii, poti trece linistit de aceasta limita atat cu HPS cat si cu LED...
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Old 11-22-2012, 10:02 PM #9
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tie probabil o sa'ti ajunga...lui marian sigur nu
la 100 de wati de led probabil aprox 50 dar doar cu taining,cum zice hemp.hemp ai dreptate pe jumate si stii la ce ma refer:P
N-am nici cea mai mica idee la ce te referi , dar daca nu e un secret ne poti spune. Cred ca e in interesul toturor sa fim cat mai exacti, pentru ca cei care citesc aceste discutii sa aiba ceva de invatat din ele.

Si asa cum a spus si HJ un pic mai devreme, chiar si cu o sursa de lumina clasica poti avea un randament mic.

Insa pentru un grower incepator, la prima experienta cu un strain, chiar si 0.5g/w este un rezultat multumitor atata timp cat calitatea se ridica la nivelul asteptarilor.

Sa scoti 1g/w din prima sau chiar mai mult ar fi, dupa mine, noroc chior sau un super fler de grower si pentru asta

Au existat destul de multe situatii de microgrow-uri facute in carcasa de PC sau spatii asemanatoare unde recolta a depasit 1g/w chiar din prima incercare. Dar asemenea conditii nu pot fi replicate la scara mai mare pentru ca ar fi un haos total in spatiul respectiv.
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Old 11-22-2012, 10:33 PM #10
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Per ansamblu hidurile au fost,sunt si vor fi peste orice alt rahat inafara de soare.
eu nu vad maine sau poimaine sau peste 10 ani un laborator pentru un cabinet canadian sa ceasca exclusiv LEd.e bun ledul pt cine vrea sa se complice(nu neaparat fara rost)
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